Answers
Answer:
The correct answer is -
The phenotype of offspring (first cross or F1): 100% tall
The genotype of offspring (first cross or F1 - 100% Tt or heterozygous)
The phenotype of offspring in F2 (F1 × F1) - 3:1 (3 tall: 1 dwarf)
The genotype of offspring in F2 (F1 × F1) - 1:2:1 (One dominant tall: two heterozygous tall: one dwarf)
Explanation:
In this experiment of Mendel, Mendel selected the pea plant as it has various characters, short life span, and easy to breed. For this, he used two true breed lines, tall plants that had dominant allele TT and dwarf plant tt (recessive). In presence of the dominant allele, recessive alleles do not show their characteristics and only express if both alleles are recessive.
In the first cross of TT and tt
Gametes: T and t
offspring: Tt
the offsprings are all tall and heterozygous which means one dominant and one recessive allele.
second cross or F1 × F1
Tt × Tt
gametes: T, t and T, t
offspring: TT, Tt, Tt, tt
Thus,
The phenotype of offspring (first cross or F1): 100% tall
The genotype of offspring (first cross or F1 - 100% Tt or heterozygous)
The phenotype of offspring in F2 (F1 × F1) - 3:1 (3 tall: 1 dwarf)
The genotype of offspring in F2 (F1 × F1) - 1:2:1 (One dominant tall: two heterozygous tall: one dwarf)
Related Questions
BIO
L
SITY LES
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b) Explain why a leaf cannot be tested for starch by adding iodine solution directly.
Answers
Answer:
Due to presence of waxy layer.
Explanation:
A leaf cannot be tested for starch by adding iodine solution directly because waxy cuticle covering the leaves that prevents the penetration of iodine in the leave cells. First, the waxy layer should be removed by boiling the leaves that causes disruption in the cell membranes that make easier for the iodine to penetrate in the leave cells so that's why iodine can not be tested for starch directly.
A dog breeder has a brown haired dog (Bb) and a white haired dog (bb). If she breeds these dogs, and the mother has a litter of 8 pups, how many should have white fur?
Answers
Answer:
4 of the 8 pups should have white hair.
Explanation:
for a litter of 4 pups there is a 50% chance of white hair vs brown hair.
Answer: 4
Explanation: white hair is recessive
Bb x bb —> Bb:bb = 1:1
Fossils are preserved remains of ancient life. Which of the following would be considered fossils? A. hair and flesh of a woolly mammoth preserved in ice B. dinosaur footprints preserved in rock C. rock-like pieces of bones from an ancient fish D. all of the above
Answers
Answer:
d
Explanation:
please give brainlest need 2 more
In the southeastern United States, there is a small type of lizard called a fence lizard. They have short legs and live under leaves and dead logs.
Over the last 70 years, fire ants have moved into the lizard's environment. When fire ants sting the lizards on their body, the lizards can die
Scientists have observed that in places with fire ants and lizards living together for a long time, the lizards have longer legs. In places where fire
ants have only been there a short time, the lizards' legs are shorter overall
Fire ants move into a new environment with the lizards. What will most likely happen to the lizard population over the next several years?
A. Some of the lizards would try to develop new traits to avoid the ants, and they would pass on those traits to their
offspring. The other lizards would die
B. All of the lizards would try to develop new traits to avoid the ants. They would all survive and pass on those traits to
their offspring
OC. Due to random mutations, some lizard offspring are born with different traits that help them avoid the fire ants. These
offspring will most likely survive and reproduce, while the lizards born without those traits will die.
Select an answer
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Answers
Answer:
Answer is C. Due to random mutations, some lizard offspring are born with different traits that help them avoid the fire ants. These offspring will most likely survive and reproduce, while the lizards born without those traits will die.
Explanation:
Which mutation is harmful to the organism
A, a mutation allowing moths to camouflage better on blackened tree bark
B, a mutation making staphylococcus aureus resistant to the antibiotic methicillin
C, a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell
D, a mutation causing uncontrolled cell division
E, a mutation giving plant leaves a bitter taste to discourage herbivores from eating them
Answers
Answer:
D,The Mutation causing uncontrolled cell division is the correct answer.
2. Consider a well-trained 130-pound female marathon runner, Jordan. Jordan has just loaded up on a carbohydrate meal and has the maximum amount of stored glycogen (6.8 grams of glycogen per pound of body weight). (10pts)
a. How many grams of glycogen is Jordan storing in her body? Show your calculations.
b. How many Calories does she have stored as glycogen?
c. If this same number of Calories were stored as fat, how much would it weigh?
d. Given your answers to a. and c., why do you think your body stores most of its extra energy as fat rather than glycogen?
e. Jordan will be competing in a marathon (26.2 miles). Given her above glycogen stores and the rate at which she consumes them running at marathon pace, she only has enough glycogen to last for 24 miles. What must she do in order to be able to run at the same pace beyond this?
Answers
Considering a well-trained 130-pound female marathon runner named Jordan.
The grams of glycogen Jordan is storing in her body is 884 grams.
Given that:
weight of the female marathon runner = 130 poundsmass of the glycogen = 6.8 grams / pounda.
The total mass of glycogen that Jordan is storing in the body of 130 pounds is:
= 130 pounds × 6.8 grams/pound= 884 gramsb. The amount of Calories she has stored in the body of 130 pounds is calculated as follows.
Since 1 gram is equivalent to 7.716179 kcal
∴
884 grams will be = (884 grams × 7.716179 kcal)/ 1 gram= 6821.102 kcal.c.
Fat is a class of food that the when consumed provides energy to the body. It is usually stored as fatty acid and is measured in pounds.
One pound of fat usually requires an energy of about 3500 calories to burn.
Since 1 pound of fat requires 3500 calories;The weight of the glycogen in fat will be:
= (6821.102 kcal × 1 pound of fat)/3500 kcal= 1.949 pounds of fatd.
The body stores most of its extra energy as fat rather than glycogen because the body after 8 hours of eating, body starvation starts to occur. At this stage, the stored fat is designated to supply energy to the body.
e.
Given that:
Jordan will be competing in a marathon of = 26.2 milesFrom her condition, she has enough glycogen to last for 24 miles.In order for her to be able to run at the same pace beyond the 24 miles, she needs to consume fatty food substances that can help her store additional fat that can be used to provide energy during the marathon race.
Therefore, we can conclude that we have understood the grams of glycogen that Jordan can store in her body, the conversion from grams to calories, and how Jordan can achieve the marathon of 26.2 miles.
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In comparing the behavior of a 10,000 and 45,000 molecular weight protein using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and gel filtration column chromatography, which of the following statements is most likely to be true. Assume other proteins are single polypeptide chains with no disulfide bonds.
a. The smaller protein will migrate (move) faster relative to the larger protein in SDS-PAGE but slower in gel filtration.
b. The smaller protein will migrate (move) slower relative to the larger protein in both SDS-PAGE and gel filtration
c. The smaller protein will migrate (move) faster relative to the larger protein in both SDS-PAGE and gel filtration
d. The smaller protein will migrate slower (move) relative to the larger protein in SDS-PAGE but faster in gel filtration
Answers
Answer:
a. The smaller protein will migrate (move) faster relative to the larger protein in SDS-PAGE but slower in gel filtration.
Explanation:
Gel filtration chromatography is a technique of chromatography in which particles facilitate separation based on molecular size. The larger protein come out of the column and form gel permeation chromatograph. The smaller proteins move faster to migrate from the column.
1. Tell what type of interaction is being performed by the following pairs of
organisms. (Commensalism, Mutualism, Competition, Parasitism and
Predation)
6. aphid and rose plant
9. butterflies and flowers
10. birds and worms
7. lion and buffalo
8. coral reefs and fishes
Answers
Answer:
6. Parasitism
9. mutualism
10. predation
7. predation
8. mutualism
Explanation:
Living organisms, in their natural habitat, forms certain relationships with one another. These relationships are as follows:
- Mutualism is the association of two organisms in which both organisms benefits from one another in the relationship. Example is butterfly and flower in this question, where the butterfly helps pollinate the flower while the plants provide food source for the butterfly. Another example is coral reefs and fishes where the fishes and coral depend on one another.
- Predation is the kind of relationship in which one living organism called PREDATOR kills and feeds on another called PREY. Examples are the relationship between birds and worms, lion and buffalo where the bird and lion are predators while worm and buffalo are preys.
- Parasitism is the relationship between two organisms in which one organism called PARASITE lives on and derive nourishments from another organism called HOST. In the example of aphid and rose plant where the aphid is the parasite and rose plant is the host.
The type of interaction that is being performed by the following pairs of
organisms include the following:
Aphid and rose plant - ParasitismButterflies and flowers - MutualismBirds and worms- PredationLion and buffalo - PredationCoral reefs and fishes - MutualismAphid and rose plant have a parasitic relationship due to the aphids taking
up vital nutrients from the rose plant thereby resulting in distorted growth.
Butterflies and flowers have a mutualistic relationship as the butterfly aids
pollination of the flowers and also derives food and juice in return.
Birds and worms have a predatory relationship as the birds eat worms for
food and survival.
Lion and buffalo have a predatory relationship as the Lions eat buffalos for
food and survival.
Coral reefs and fishes have a mutualistic relationship as the fishes aids
reproductive ability of the coral reefs while the fishes benefit food and habitat in return.
Read more about Species interaction here https://brainly.com/question/10438690
The order of the genes on a plant chromosome is A, B, C, where A and B are located 10 cM apart and B and C are located 3 cM apart. What is the probability that the trihybrid ABC/abc will produce any kind of recombinant gamete
Answers
Answer:
Double Crossing-over prob = 0.3% Simple Crossing-Over prob A-B = 9.7%Simple Crossing-Over prob B-C = 2.7%Total Crossing-Over prob = 12.7%Explanation:
Available data:
order of the genes on a plant chromosome is A, B, CA and B are located 10 cM apartB and C are located 3 cM apartThe genetic distance = recombination frequency x 100 expressed in map units (MU). One centiMorgan (cM) equals one map unit (MU).
We can use the provided map with the distances between genes to predict the occurrence of any kind of recombinant gamete.
We know that there is a probability of a simple crossing over to occur between genes A and B, or between genes B and C. And we also know that there is a probability of double crossing-over occurrence.
We can get the probability of the double-crossing over by multiplying the recombination frequencies between A-B and B-C. So,
DCO prob = recombination frequency A-B x recombination frequency B-C
= 0.1 x 0.03 = 0.003 = 0.3%
DCO prob = 0.3%
According to this, we would expect to find
0.15% AbC0.15% aBcNow we need to know what are the probabilities of getting a simple crossing-over, SCO. We already have the genetic distances between genes. 10 cM equals 0.1 of recombination frequency, and 3cM equals 0.03 of recombination frequency. However, we can not estimate the probabilities of simple crossing over using only this information, because this data is including the probabilities of the double crossing-over occurrence. So we need to substrate this percentage.
SCO prob A-B = 0.1 - 0.003 = 0.097 = 9.7%
SCO prob A-B = 9.7%
we would expect to find
4.85% Abc4.85% aBCSCO prob B-C = 0.03 - 0.003 = 0.027 = 2.7%
SCO prob B-C = 2.7%
we would expect to find
1.35% ABc1.35% abCThe total Crossing-over probability, TCO, is then the sum of all the crossing over probabilities,
TCO= SCO A-B + SCO B-C + DCO
TCO prob = 9.7% + 2.7% + 0.3%
TCO = 12.7%
The forehead is _______ to the ears.
Multiple Choice
medial
lateral
inferior
lateral
distal
Answers
Answer:
Hey!
Your answer should be LATERAL!
Explanation:
Hope This Helped!
(lemme know if its wrong!)
A gallon of olive oil sitting on a high shelf is likely to have:
a. Kinetic Energy
b. Gravitational Potential Energy
c. Electrical Energy
d. Nuclear Energy
Answers
Answer:
b. Gravitational Potential Energy
Explanation:
The olive oil currently holds potential energy, which it is given from the pull of gravity, constantly pulling it down to the earth.
If the olive oil were knocked down the gravitational energy would then be kinetic, or moving. The other choice simply don’t make sense, as the olive oil is unlikely to be electrically charged, nuclear reactive, or -as it’s not currently moving- have kinetic energy. Therefore the proper response is:
b. Gravitational Potential Energy
Can someone help me understand this plz
Answers
What is a phenotypic variation?
Answers
Answer:
Mendel worked with pea plants showing complete dominance for various characteristics
- E.g. flower color, plants either have purple flowers or white flowers
- A particular genotype produces a recognizable phenotype
Explanation:
Phenotypes can cause by genes, environmental factors, or a combination of both.
Phenotypic variation, then, is the variability in phenotypes that exists in a population. For example, all people come in different shapes and sizes: height, weight, and body shape are phenotypes that vary.
I NEED HELP ON THIS QUESTION ^^^^!
Answers
Answer:
The answer is refraction.
Explanation:
Absorption is when no light is reflected back, diffraction is where light bends around a corner, reflection is like taking and shining a flashlight against a mirror, and refraction is like when you put a straw in water and it looks like the straw is not straight.
Answer:
D reflection nga
wala na bang ibang tanong HAHAHHA
How many planets in the solar system?
Answers
I hope this works!
the answer would be 8 hope that helps ;]
What organelle does a plant cell have in common with bacterial cells, but not animal cells?
Answers
Answer:
ribosomes
The Protein Factory. Plant, bacteria and animal cells all have ribosomes that contain RNA and proteins. Ribosomes translate nucleic acids into amino acids to make proteins. Proteins form enzymes and play a role in every function within cells.
which of the following statements is true? hydroelectric power does not damage the environment. waste from nuclear power plants is dangerous to human health thermal pollution decrease as the temperature of aquatic ecosystems oil sinks in water which me most spills sink before harming plants and animals
Answers
Answer:
waste from nuclear power plant is dangerous to human health
Answer:
B) Waste from nuclear power plants is dangerous to human health.
Explanation:
Its was right on Odyssy ware
Hope it helps!
:)
Nutrients can be classified as essential or nonessential. All of the following are reasons why a nutrient could be considered an essential except
Answers
Answer:
vitamin A is essential because consuming too much supplemental vitamin A during pregnancy can cause birth defects.
Hope this helps!
Which of these elements is likely to be found in an organic compound?
A. helium
B. hydrogen
C. mercury
D. tin
Answers
Answer:
it could be B or A
Explanation:
hope it helps
Which of the following would NOT be considered an agricultural pest?
an insect chewing holes in leaves
a dog lying among the crops
a rabbit eating growing vegetables
a mole digging tunnels beneath the crops
Answers
Answer:
A dog lying among crop
Explanation:
A insect, and mole are considered pest. And a rabbit eating growing vegetables, well if the rabbit eats the growing vegetables then there not growing.
Answer: The correct answer is a dog lying among the crops
Explanation: This answer has been confirmed correct.
A dog is a pet and is not causing damage to the crops. The other three options are all harming the plants (chewing, eating, and digging tunnels).
what is the best cancer books which I can read them?
Answers
Medicine, Art, Time, Dreams, Data,
Exhaustion, Cancer, and Care by Anne Boyer. ...
The First Cell: And the Human Costs of Pursuing Cancer to the Last by Azra Raza. ...
The Emperor of All Maladies: A Biography of Cancer by Siddhartha Mukherjee.
Are landslides considered a form of weathering, erosion, or deposition? Explain your answer.
Answers
Answer:
erosion
Explanation:
Landslides are actually a very extreme, fast-acting method of erosion: They transfer sediment down a slope and deposit it at the end of their path. The sediment a landslide deposits is known as its talus. The five agents of erosion are wind, waves, running water, glaciers and gravity.
In the US, 1 in 1700 Caucasian children will be born with the monogenic hereditary disorder Cystic Fibrosis (CF), a pathology that results in an accumulation of abnormally sticky and thick mucus affecting the lungs and digestive system. Consider a small isolated community in Appalachia where most of the population lives below the poverty level and where adults have a higher rate of CF that the national average since the people tend to marry neighbors. The general practitioner for the county receives a Bill and Melinda Gates Foundation Grant to ascertain how many children in the community inherited cystic fibrosis from their parents. Out of 172 children tested, she finds 38 have CF. Remember that Mendel believed in diagnostic ratios for understanding inheritance outcome although other factors can come into play like assortative mating.
Answers
Complete question:
In the US, 1 in 1700 Caucasian children will be born with the monogenic hereditary disorder Cystic Fibrosis (CF), a pathology that results in an accumulation of abnormally sticky and thick mucus affecting the lungs and digestive system. Consider a small isolated community in Appalachia where most of the population lives below the poverty level and where adults have a higher rate of CF that the national average since the people tend to marry neighbors. The general practitioner for the county receives a Bill and Melinda Gates Foundation Grant to ascertain how many children in the community inherited cystic fibrosis from their parents. Out of 172 children tested, she finds 38 have CF. Remember that Mendel believed in diagnostic ratios for understanding inheritance outcome although other factors can come into play like assortative mating.
Based on the testing outcome, give your opinion on whether you think Cystic Fibrosis is a dominant or recessive disorder.
A.Probably dominant.
B.Probably recessive.
C. Neither
D. Not enough information
Answer:
B. Probably recessive disorder
Explanation:
Due to technical problems, you will find the complete question, the answer, and the explanation in the attached file.
The worst kind of self-love is
Altruistic
Narcissistic
Unconditional
Social
which one is it
Answers
Answer:
Narcissistic Love
Explanation:
Answer: narcisism is the only one that makes sense
Explanation:
what useful purpose is served by cell division in a multicellular organism : select all the correct answers.
A: to ensure that a cell does not become to large
B; To produce new cells during an organisms growth
C: To replace damaged cells and tissues
D: to ensure all cells remain undifferentiated
Answers
Answer:
c
Explanation:
the main reasons cells duplicate is so they can replace damaged cells and tissues
The following options are the useful purpose is served by cell division in a multicellular organism:
A. to ensure that a cell does not become too large B. To produce new cells during an organism's growth C. To replace damaged cells and tissuesMulticellular organisms are the organism that is formed by the complex organization of cells, tissues, or organs Whereas a single-cell organism is unicellular organisms.
Single-celled organisms use cell division only for reproduction.All multicellular organisms use cell division for growthAnther purpose of cell division in multicellular is to replace and repair cells and tissues.Cell division is a strictly controlled process as a failure of regulation can be life-threatening.In multicellular organism cell division takes place in sex cells as well as somatic cellsThus, the correct answer is options A, B, and C.
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The smallest unit that can carry on all the processes of life is a
Answers
The smallest unit that can carry on all the processes of life is a cell.
Answer:
Cell
Explanation:
Cell is the basic unit of life processes
The principal enzyme involved in DNA replication is called . The enzyme joins to synthesize a new strand of DNA . DNA replication is called , because each new DNA molecule is made up of one original and one new strand.
Answers
Answer:
1. DNA polymerase
2. Nucleotides
3. Complementary
4. Semiconservative
Explanation:
I took the quiz.
The enzyme in DNA replication is DNA POLYMERASE, it joins NUCLEOTIDES to synthesize a COMPLEMENTARY strand of DNA. DNA replication is SEMICONSERVATIVE.
DNA polymerase is an enzyme that adds nucleotides to the growing DNA strand.This DNA strand is complementary to the template DNA strand.DNA replication is semiconservative because each daughter DNA molecule contains a new DNA strand and one original strand.In conclusion, the enzyme in DNA replication is DNA POLYMERASE, it joins NUCLEOTIDES to synthesize a COMPLEMENTARY strand of DNA. DNA replication is SEMICONSERVATIVE.
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A remote-controlled helicopter flew 826 meters west at a constant velocity. It flew that
distance in 70.0 seconds. What was the helicopter's velocity?
Answers
Explanation:
Distance = 826m
time = 70second
velocity = distance/ time
v = 826/70
v = 11.8m/sec
1pt Salts dissociate into component ions when placed in
A. a flame.
B. a basic solution.
C. a neutral solution.
D. water.
Answers
Answer:
D. Water
Explanation:
the covalent bonds of water are stronger than the ionic bonds in the salt molecules so they dissolve.
Question 13 of 35
Which option describes the direction of thermal energy transfer in Earth's
oceans?
A. From the poles to the equator
B. From cool areas to warm areas
C. From the ocean floor to its surface water
D. From the equator to the poles
SUBMIT
Answers
Answer: D. From equator to the poles.
Explanation: took the exam
