Answer:
0.2 (or 20%)
Explanation:
The allele frequency can be calculated by counting how many times an allele appears in a population and then by dividing this number by the total number of alleles of the gene. In this case,
- Genotype BB = 30 moths >> 60 copies of the B allele
- Genotype Bb= 12 grey moths >> 12 copies of the B allele and 12 copies of the b allele
- Genotype bb= 3 white moths >> 6 copies of the b allele
The total number of copies of the gene is:
Dominant (B) allele = 60 (BB genotype) + 12 (Bb genotype) = 72 B alleles
Recessive (b) allele = 12 (Bb genotype) + 6 (bb genotype) = 18 B alleles
Then, 72 + 18 = 90 alleles
Allele frequencies:
Dominant (B) allele = 72/90 = 0.8 (or 80 %)
Recessive (b) allele = 18/90 = 0.2 (or 20%)
The frequency of the white allele b alleles for the moth-coloration gene in the population - 40%
The frequency of an allele can be calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population
Total number of b alleles = number of alleles present in recessive bb + number of alleles present in heterozygotes Bb
Number of bb individuals = 3 Number of b alleles present in bb = 3 × 2 = 6 Number of Bb individuals = 12 Number of b alleles present in Bb = 12 × 1 = 12 Total number of b alleles = 6 + 12 = 18the frequency of an alele = 18/45
= 40%
Thus, the frequency of the white allele b alleles for the moth-coloration gene in the population - 40%
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Where does sugar enter the blood?
Answer:
When the stomach digests sugar it turns into glucose. Glucose is then processed in the stomach and small intestines rather absorbed and then released into the bloodstream.
Explanation:
ncreased use of electricity has had a negative impact on the environment by
increasing
A. farmland
B. electric cars
c. air pollution
D. available food
whats the definition of photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize get nutrients from carbon dioxide and water.
Explanation:
hopes this helped :)
Photosynthesis is defined as the processes that bring about the manufacturing of food by green plants.
Food is complex energy-rich organic matter which living organisms feed on to obtain nutrients, substances necessary for life. Green plants which are known as autotrophs has the ability to produce their own food through the process of photosynthesis.
The main features of photosynthesis include:
It takes place in the chloroplasts of plants, in the presence of sunlight.The energy needed for the process is gotten from sunlight which is absorbed by chlorophyll found in the chloroplasts.The raw materials used are low-energy containing inorganic compounds, example: carbon dioxide and water.The final products are high-energy containing sugars. oxygen is given off as a waste product.Learn more here:
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The skeletal system is the framework of the human body, comprised of bones, joints, and connective tissue. The integumentary system forms the largest system of the human body and is made up of skin, hair, nails and glands. How do the skeletal and integumentary systems work together to protect the human body?
A. The two systems initiate muscle contractions that protect the human body.
B. The two systems provide a barrier between the outside environment and the internal organs of the body.
C. The two systems initiate an immune response that protects the human body.
D. The two systems deliver signals between the outside environment and brain.
Answer:
A.
Explanation:
by maintaining the right amount of pressure, the right temperature, and controlling what comes into the body, your skin protects those muscles that help you move around.
living cells maintain a balance between materials entering and exiting the cell. their ability to maintain this balances called blank
A diagram that is used to show the loss of energy as you go forward in a food chai
a.) food web
b.) energy pyramid
c.) concept map
d.) trophic levels
Answer:
tropical levels ........
4. Which is a factor that keeps Earth in orbit around
the Sun?
A. the gravitational pull of the Sun
B. the orbital path of the moon
C. the continuous motion of the universe
D. Earth's changing speed and direction
Answer: A. the gravitational pull of the Sun
The sun is providing a centripetal force pulling the earth inward toward the sun. At the same time, the inertia of the earth is making it want to move forward in a straight line. The two forces work together to create the net effect of the earth orbiting around the sun. Other planets, moons, asteroids, and celestial objects exert gravitational forces on the earth as well, but nowhere near the amount of what the sun does.
( please answer I uploaded this question 5 times now)
Which of the following statements best describes negative feedback loops?
A. They respond to changes with changes in the same direction, to move a value toward an endpoint.
B. They produce negative outcomes for the organism.
C. They aren't used often in maintaining homeostasis.
D. They respond to changes with changes in the opposite direction, to keep a value in the optimal range.
Answer:
D. (Iḿ only like 98% sure honey but I hope this helps ya)
Explanation:
Answer: C because i looked it up and i have a good feeling hope i helped
What would happen if complexes I-IV of the electron transport chain pumped protons in the opposite direction?
a. Too much ATP would be synthesized.
b. None of the other answer options is correct.
c. No ATP would be synthesized.
d. There would be too many electrons in the mitochondrial matrix.
Answer:
The correct answer is - c. No ATP would be synthesized.
Explanation:
In the electron transport chain there are four complexes, complexes I-IV, pumps the protons from the matrix of the mitochondria into the intermembrane space. This is the downhill movement of the electrons that helps in synthesizing the ATP molecules.
If the complexes move or pump the electron uphill or against the gradient there would be no ATP formation as there would be no interchange of proton and electron interchange.
Which describes bedrock?
o consists of solid rock
o lies directly above the soil layer
o does not contain weathered rock
o forms from decomposed material
Answer:
consists of solid rock
Explanation:
bedrock contains only solid rock unless you are talking about a different type of bedrock this bed is called saprolite. saprolite contains severly weathered rock and lies above the solid layer of bedrock
Answer:
a
Explanation:
Which of these is a condition where the endometrial lining that is normally supposed to only be inside the uterus, ends up outside the uterus (for instance, in the pelvic cavity) and causes extreme pain during menstruation? This condition affects up to 1 in 4 women.
Answer:
Endometriosis is called the pathology
Explanation:
Endometriosis is a pathology where fibroblasts or connective tissue cells proliferate outside the fallopian tubes in the abdomen, close to the intestine, and adjacent to the ovaries, by proliferating and reducing the space between the organs, the pressure of the terminals increases nervous and during menstruation it hurts.
They are benign proliferative cell foci.
What causes Seismic Waves?
-Release of energy along a fault
-Tsunami waves hitting the shore
-Seismograph Stations
-Hurricanes
Gross production is the amount of energy left after cellular respiration.
ОТ
OF
Answer:
False
Explanation:
There is a quizlet on energy transfer and this is on there.
1) Which of the following are the tiny hairs that filter the air that is inhaled, or breathed into the body?
A: Alveoli
B: Cilia
C: Bronchioles
D: Bronchi
2) Which of the following is referred to as the windpipe, which the inhaled air travels through to reach the lungs?
A: Trachea
B: Diaphragm
C: Bronchi
D: Cilia
3) Which of the following parts of the lungs allows air to be exchanged and then sent to the heart for distribution to the cells of the body?
A: Bronchi and bronchioles
B: Cilia and trachea
C: Alveoli and capillaries
D: Larynx and windpipe
4) Which of the following is another term for the voice box, which has vocal cords that vibrate when a person speaks?
A: Trachea
B: Throat
C: Diaphragm
D: Larynx
5) Which of the following are the tubes that enter the left lung and right lung, branching off from the trachea?
A: Bronchi
B: Bronchioles
C: Alveoli
D: Capillaries
6) Which of the following is the correct sequence for the air that travels from the nose or mouth, and eventually sending oxygen throughout the body?
A: Trachea, bronchioles, bronchi, alveoli, capillaries
B: Trachea, bronchi, bronchioles, alveoli, capillaries
C: Trachea, alveoli, capillaries, bronchi, bronchioles
D: Trachea, larynx, bronchi, bronchioles, alveoli
Answer:
Cilios
tráquea
Alveolos y capilares
laringe
bronquios
Tráquea, bronquios, bronquiolos, alveolos y capilares
Explanation:
Los pasajes nasales están protegidos por pelos diminutos llamados cilios, que se encargan de filtrar el polvo y otras partículas que entran a la nariz
1.what are three factors that affect the rate of chemical reactions?
2.select one of these factors and describe how it affects chemical reactions within our bodies.
Explanation:
The factors that affects the rate of chemical reactions are;
Nature of reactants Concentration of reactants or pressureTemperature Presence of catalystSunlightIn our body, the nature of reactants is very important. A food substance in solid form undergoes slow digestive process because it has little surface area exposure for the action of digestive chemicals. Most solid food are usually chewed in the mouth before digesting them to increase their surface area.
The increasing order of food digestion is;
lumps to granules to powder and to liquids.
contains good bacteria that helps remove wastes
Answer:
Lymph
Explanation:
A colorless or faintly yellow fluid that helps remove wastes ,toxins ,and other harmful substances from the body ;also known as lymphatic fluid or interstitial fluid.
6. Why does DNA condense during mitosis?
Answer:
During mitosis, the chromosomes condense so that each chromosome is a distinct unit.
Explanation:
The convection cycles of mantle are the main cause of movement of what part of the Earth?
Answer:
The crust ( I think)
Explanation:
How does eukaryotic cells divide? A DNA replication, mitosis, cytokinesis B DNA replication, chromosome segregation, cytokinesis, C mitosis, meiosis, cytokinesis or D DNA replication, meiosis, cytokinesis
Answer:
B
Explanation:
What is the stomie number of this atom?
A,b,c 8,13,9,5,4
Answer:
The atomic number is the number of protons (positive charge) in an atom.
Explanation:
I don't know the atomic number of your atom because it differs for all atomes, just count the number of positive charges and thats the answer. HOPE THIS HELPS!!!
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Please help. This is due today :(
Label the following.. Word bank is below
1) How is energy transferred from one organism to another?
Answer:
Eating
Explanation:
Organisms eat one another to get energy.
List which cell has the listed characteristics
1 Extensions
2 Matrix
3 No nucleus
4 Striated
5 Used in the immune system.
Please Answer Quick!!! 2. How are the three mutated strands similar to each other?
Answer:
they are both long
Explanation:
i had this question yesterday
A brown mouse is crossed with a heterozygous black mouse if the mother has a litter of four what are the chances of one of them being brown
Answer:
I used a Punnet Square to determine what percentage of 1 of the mice would be brown.
Explanation:
Please tell me how does water flow through sponges in order
Answer:
Small and tube shaped, water enters the sponge through dermal pores and flows into the atrium. Choanocyte flagella create the current to expel it through a single osculum. Note that water enters the sponge through a modified cell known as a porocyte.
Explanation:
Hope this helped, Have a Wonderful Day!!
Compare the effectiveness of the different antibiotic drugs and chemical disinfectants. Which seems to be better at controlling bacterial growth
Answer:
Antimicrobials are classified as selective and non-selective, selective are antibiotics, non-selective are surface disinfectants that are not used in human organisms such as antibiotics.
Explanation:
That is why antibiotics are considered more effective to inhibit the growth of bacteria, since the special antibiotic that covers a certain spectrum of bacteria is selected, that is what gives them specificity and greater effectiveness, some are bacteriocidal and others bacteriostatic, considering the former as those that generate the defined death of the bacteria, and assures us more of bacterial death or inhibition of proliferation.
Which statement describes the Mercalli scale?
1 This scale measures seismic waves based on their size.
2 This scale rates an earthquake according to how much damage it causes.
3 This scale produces a single rating for earthquakes that reach the surface.
4 This scale measures the magnitude of an earthquake based on the size of seismic waves.
Answer:
2- this scale rates an earthquake according to how much damage it causes
Mercalli scale rates an earthquake according to how much damage it causes. So, the correct option is B.
What is Mercalli scale?The Mercalli scale was invented by Giuseppe Mercalli in 1902, is not regarded as a scientific method for measuring the strength of an earthquake.
The Mercalli scale is used in the observations of people who experienced an earthquake to estimate the intensity, which is measured based on the degree of impact or damage to humans, objects, buildings, and other man-made things.
The scale typically measures the intensity of an earthquake using data such as effects on the Earth, the environment and humans that help predict whether an earthquake was fatal.
Thus, Mercalli scale rates an earthquake according to how much damage it causes. So, the correct option is B.
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Process used to replace dead cells.
In light of recent scandals, the process used to replace dead cells is largely self-evidentiary. Wherefore, I can not say.
What type of molecule "unzips" DNA to facilitate the process of replication? *
a nucleic acid
b lipid
c carbohydrate
d protein
Answer:
c
Explanation:
