A polygenic trait is controlled by
A. two or more genes.
B. one gene that has only two alleles.
C. one gene with only one allele.
D. two alleles on two genes​

Answers

Answer 1

Answer:

A. two or more genes because most genetic characteristics or traits are controlled by many genes.

Answer 2

Answer:

A. two or more genes

Explanation:


Related Questions

Im stuck in this question if you know please comment

Answers

Answer:

C

Explanation:

meiosis increases the genetic variability due to mixing of genetic material between chromosomes.

it produces genetic variation by a process known as recombination.

When do populations increase?

Answers

Answer:

c

Explanation:

i have seen this before and i got it correct i dont know if it works with you?

hey there!
the correct answer would be C when birth rights are higher then death rights.
this is correct because when there are more people being born and less dying there are more overall people.
hope this helped!

Structure that display characteristic of living organisms only within living cells

Answers

this is the answer I hope it helps u

1. A group of individuals of the same species that mate and produce offspring is called a
A. gene pool.
B. niche.
C. genetic family.
D. population.

2. Any change in the genetic material of a cell is called a
A. mutation.
B. single-gene trait.
C. genotype.
D. polygenic trait.

3.In genetic terms, evolution is defined as any change in the relative frequency of
A. a single-trait gene of a population over time.
B. alleles in the gene pool of a population over time.
C. genes in a population over time.
D. phenotypes of a population over time.​

Answers

1:d
2:a
3:a
Looked them up but you know the internet and what you have been taught could be different so good luck

HELPPPPP ASAPPPPP!!!!!!

Answers

Hiii it’s B I know this cuz I took astronomy

explain how the cells, tissue, and organs within the circulatory system work together to enable it to perform its function of pumping materials around the body and removing waste products such as carbon dioxide.

Answers

Answer:

the body has levels of organization that build on each other.Cells make up tissues,tissues make up organs,and organs make up organs system.

HELP ME PLEASE ILL GIVE BRAINLY IF U GET IT RIGHT PLEASE!!!!

Answers

Answer:

the right answer is option B

You only have to answer the first question. I will give brainliest to the best answer.

Answers

Answer:

The mushroom is composed of two parts, the above ground part, and the underground part. Each part has its unique function and purpose in the life cycle of a mushroom.

Spores

It is usually released into the air and falls on the ground to start the life cycle of the mushroom. Seeds that acts as the mushrooms reproductive system.

Stem

A soft branch is supporting the mushroom’s cap.

Gill

Located under the cap, it produces the spore of the mushroom.

Mycelium

This part of the mushroom serves as the breeding ground of smaller mushrooms to grow.

Hypha

The microscopic filament that draws water and the organic matter necessary for mushroom development.

Volva

The remnant of a membrane that completely covers the immature mushroom.

Ring

A covering located under the cap surrounding the stem.

Cap

The upper part of the mushroom that protects the gills. It usually resembles a headdress, hence its name.

Hope it helps!!!

define and understand the following terms:(1)Phylum (2)Class (3)Family (4)Order (5)Genus

Answers

Explanation:

phyllum: group group of related classes

classes: group of related order

family: a group of related genera (genus)

order: group of related families

genus: group of related species

Answer:

(i) Phylum

The phylum is second highest unit of classification after Kingdom. It includes one or more related classes of animals. In plants, instead of phylum, the term ‘division’ is used.

(ii) Class

The class is a taxonomic group consisting of one or more related orders. For example, the class, Mammalia, includes many orders like Primata (Man), Carnivora (tiger) etc.

(iii) Family

Family is a taxonomic group containing one or more related genera, eg., Family hominidae contains apes, monkeys and man. In plants, families are categorized on the basis of vegetative and reproductive features.

(iv) Order

Order is a taxonomic group containing one or more families. For example, the order, carnivora, includes many families.

(v) Genus

Genus is a taxonomic group including closely related species. For example, the genus, Solanum, includes many species such as nigrum, melongena, tuberosum, etc.

I hope it's helpful!

The nucleotide base sequence of a strand of DNA is TAC-CGG-AGT . What is the sequence of the complementary DNA strand ?

Answers

Answer: ATG-GCC-TCA

Explanation: A's pair with T's, C's pair with G's. In the complementary strand simply pair any T's with A's and vice verse and any C's with G's and vice verse

2. (04.03 MC)
Which component is missing from the process of cellular resplration?

Glucose + Carbon Dioxide + Water + Energy

a Sunlight
b Sugar
c Oxygen
d Carbon​

Answers

Answer:

c

Explanation:

Answer:

C oxygen

Explanation:

Oxygen is the missing component

hope it helps!

in which Domain & Kingdom would scientists classify an organism, whose cells contain a nucleus, has cell walls made of chitin, and does not have chloroplasts?

Answers

Answer:

The correct answer is -

Domain: eukarya

kingdom: fungi

Explanation:

A cell with a nucleus and cell wall made up of the chitin and does not have chloroplast, are all the characteristic features of an organism of kingdom fungi which is a group of eukaryotic organisms.

The cells with the nucleus are grouped in the domain eukarya while the prokaryotic organism does not carry a nucleus in their cell and divided into Archaea and bacteria. The chitinous cell wall without any chloroplast in the cell is one of determining features of the fungi kingdom.

In which soil horizon do we find organic material?

Answers

Answer:

We can find organic material in

Top soil

Hope it will help :)

Which of the following is NOT an example of natural selection?
A People selectively breeding pitbulls.
B Insect populations developing resistance to certain pesticides.
C Male birds of certain species developing colorful feathers to attract female mates.
D Bacteria becoming resistant to antibiotics.

Answers

C, why? well because it’s largest impact

Please Helppp!!! What could lead to different populations of the same species living in different environments?

Answers

Answer: Migration, because species move to other places for food or a better or more suitable habitat and sometimes their is other species there.

Different ecological and biogeographical causes lead to different populations of the same species living in different environments. Ecological factors include intraspecific competition, migration, resource searching, habitat destruction, among others. Biogeographical dispersion involves wider areas and time factor. Human action is also a cause of dispersion.

-----------------------------------

Dispersion can be defined as the dissemination and distancing process of some individuals from others. It refers to the change in an organism's range or distribution area.

Different ecological and biogeographical processes might be involved in organisms' dispersion.

Ecological processes involve intraspecific competition for resources, habitat destruction, lack of resources -food or water-, among others. This is an intra-area, moderate dispersion that reduces competition and increases niche findings. It involves daily and seasonal migration and territoriality. Biogeographical processes refer to bigger changes that involve wider areas and time. It includes the historical factor, besides migration. This is an extra-area dispersion process.

            → Jumping dispersion refers to a few individuals, in a short time, that  can cross a barrier and occupy a new area. In this situation, the establishment is not always for sure. They must reproduce and start a new population of a certain size that can survive the new conditions.

            → Diffusion refers to populations that, through many generations, explores and expands in new regions with favorable conditions.

            → Secular migration is the diffusion through thousands of generations.

Dispersion is also caused by human actions, following different interests and goals.

When two populations of the same species migrate to new areas and adapt to different environmental pressures, they will probably suffer from the speciation process with time, becoming two different species.

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Related link: https://brainly.com/question/14333803?referrer=searchResults

How does the size of the soil particles impact
the soil's permeability (movement of water)?

Answers

Answer:

Water moves by gravity into the open pore spaces in the soil, and the size of the soil particles and their spacing determines how much water can flow in. Wide pore spacing at the soil surface increases the rate of water infiltration, so coarse soils have a higher infiltration rate than fine soils.

How does soil particle size affect permeability?

But permeability is a different thing. It increases as particle size increases. By definition, permeability is a MEASURE OF EASE with which fluids will flow though a porous rock, soil or sediment. ... That means capillarity increase as particle sizes decreases.

list and describe three methods of keeping a gap between the birth of two children.


class 10 biology btw

Answers

Answer:

either a barrier or chemical method can be used

i.e, is de usage pills or copper-t , condom in males .. etc ..... ( correct me if i m wrong ) ....

Tides are caused by gravity of the__
1. Earth and sun
2.earth and moon
3.moon and stars
4.sun and moon

Answers

Answer:

the answer to your question is number 2

You do a serial dilution in the same manner as the one in the video. A plate with a sample volume of 10-6 mL produced 43 colonies. What was the original cell density (CFU)?

Answers

Answer: 43 x 10^6  CFU.

Explanation:

Plate count is a method used to determine the number of viable microorganisms in a sample. When the bacterial concentration is high, serial dilutions are carried out in a 1:10 sequence. Then, the dilutions are successive dilutions keeping the dilution factor constant at each step. Small aliquots of these dilutions are seeded in medium contained in a Petri dish where the bacteria grow forming colonies. Then the plates are incubated and colonies develop both within the agar and on the surface.

If the concentration of the seeded aliquot is too high, the bacteria will grow too much and it will not be possible to distinguish the colonies. However, if the concentration is very low, the number of colony forming units (CFU) may be very low and thus can be counted.

Colony forming units are calculated:

CFU = Number of colonies / (volume seeded on the plate * dilution).

The dilution is 10^-6, the number of colonies counted is 43, and usually the volume plated is 0.1 mL, so we replace that in the equation:

CFU= 43 / (0.1 mL * 10^-6)

CFU= 43000000 = 43 x 10^6

How does Genetic Variation relate to Selection?

Answers

Genetic variation is a measure of the genetic differences that exist within a population. Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by: mutation.

Answer: Genetic variation is important to the processes of natural selection and biological evolution. The genetic variations that arise in a population happen by chance, but the process of natural selection does not. Natural selection is the result of the interactions between genetic variations in a population and the environment.

B cells can divide to form plasma cells. Each plasma cell contains many mitochondria
and an extensive endoplasmic reticulum. Referring to the function of plasma cells in your answer, explain why these features are important adaptations.

Answers

Answer:

Explanation:

The presence of mitochondria  and an extensive endoplasmic reticulum are the features that are important for adaptations of the plasma cell because plasma cells (white blood cells) secrete immune proteins also called antibodies which only formed due to the presence of endoplasmic reticulum whose function is to formed proteins for the cell so that's why plasma cells have large sized endoplasmic reticulum.

As a senior high school student, is it important for you to participate in any physical
activities especially in this time of pandemic? Why?​

Answers

Answer: I believe that it should be the student's choice and not forced upon them, though it is important for them to get some sort of exercise to stay healthy. During this pandemic, kids have an excuse to not do sports if they or their parents aren't comftoable with doing any extracurriculars after school.

Explanation:

Which scenario would most likely result in cooperative hunting? Finches eat grass seeds, but grass seeds are not found in an area during winter months. A shark eats a certain kind of fish, and the fish swim together when the shark comes close. Wolves eat rabbits, and the number of rabbits in an area is low. Lions eat zebra, and there are a lot of zebra and lions living in an area.

Answers

C. Wolves eat rabbits, and the number of rabbits in an area is low.
Answer:

A scenario that would most likely result into cooperative hunting is where there are few and limited number of rabbits in an area, and as such, it is difficult to hunt rabbits due to scarcity. In order to increase their chances of catching rabbits, wolves in that area would cooperate together and hunt in packs.

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How could the extinction of plants have caused the extinction of some animals?

Answers

Some dinosaur only ate plants and no meat. As plants became extinct the dinosaur who ate plants couldn’t get the food they need so they starved.

When there is a constant unbalanced force applied in the opposite direction as the motion, speed will ___________________ and acceleration will ________________________.

Answers

Answer:

When there is a constant unbalanced force applied in the opposite direction as the motion, speed will decrease and acceleration will increase.

Explanation:

An opposing force should slow something down, decreasing the speed, and acceleration is just change in speed or direction.

Have a great day!

Protein are digested and transported by fellow protein. Give vivid examples to support the statement

Answers

Answer and Explanation:

The transport and digestion of proteins is done by other proteins called enzymes. An example of this occurs in the biochemical digestion of proteins, where the enzyme pepsin promotes digestion, the breakdown of proteins into smaller pieces, through hydrolysis which is the breakdown of molecules with the use of water. These pieces of the protein are transported to the duodenum where they are digested again by the enzyme enterokinase.

reproducing a sexuality in sexuality will likely use what type of reproduction when the environment is experiencing change asexual be sexual?

Answers

Answer:

Asexual

Explanation:

To become larger in size in a living thing is called

Answers

Answer:

Growing of organisms is the process of being larger in size

Answer:

Growth or u can say growing

how do you determine amino acid sequencing

Answers

Answer:

there are two main methods used to find the amino acid sequences of proteins. Mass spectrometry is the most common method in use today because of its ease of use. Edman degradation using a protein sequenator is the second method, which is most useful if the N-terminus of a protein needs to be characterized.

Explanation:

This is the answer. Hope it helps

What is a main difference between Mercury and Neptune?

Mercury is an inner planet with a thicker atmosphere and a longer year than Neptune.
Mercury is an inner planet with a thinner atmosphere and a shorter year than Neptune.
Neptune is an inner planet with a thicker atmosphere and a shorter year than Mercury.
Neptune is an outer planet with a thinner atmosphere and a shorter year than Mercury.

Answers

Answer:

B because Mercury's orbit is 88 days and Neptune's is 164 earth years

Mercury is an inner planet with a thinner atmosphere and a shorter year than Neptune.

What is Mercury and Neptune?

Since 2011, Neptune has spent 12 years in the sign of Pisces, which it rules and enjoys being in. Mercury spends just 15 to 60 days in each sign of the zodiac, but because of the Mercury retrograde, they come together and hang out for a while.

This is incredibly uncommon. It may be said that Mercury, the hare, is enjoying a Long sleep with Neptune in a dreamy fog and has forgotten his responsibilities as a courier around the Earth.

When Mercury conjoined the Sun on March 14 at 24 degrees Pisces and then today, on March 25, when Mercury conjoined Neptune at 16 degrees Pisces, this was notably felt.

Therefore, Mercury is an inner planet with a thinner atmosphere and a shorter year than Neptune.

To learn more about Mercury, refer to the link:

https://brainly.com/question/4025230

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