1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
olasank [31]
3 years ago
14

Suppose a population is carrying a condition controlled by two alleles: A (dominant) and a (recessive). Only homozygous individu

als that have two copies of the recessive allele have the condition. If the a allele has a frequency of 20%, and the A allele had a frequency of 80%, what percentage of the population will have the condition?
A. 20%
B. 4%
C. 80%
D. 64%
Biology
2 answers:
statuscvo [17]3 years ago
5 0

Let a be Q, all which is homozygous recessive = Q∧2

A = p, AA which is homozygous recessive = Q∧2


2pq = heterozygous

It is derived from p+ q = 1

All those in a population which is Q = 20%


All A in the population (p) = 80%

Now that the disease is homozygous recessive therefore,

aa = qq or q × q = 0.20 × 2 = 4%

Then the answer is 4%.

Kazeer [188]3 years ago
5 0
  1. Answer: The correct answer is -  B. 4%  Explanation:  As per the given information in the question, the genetic condition is homozygous recessive (aa).   The frequency of dominant (A) and recessive allele (a) are given, which are 20% (that is 0.20) and 80% (0.80) respectively.  According to Hardy-Weinberg Principle - p+q=1 ,  p{2} +2pq+q^{2} =1 Where, p and q denotes frequency of dominant and recessive alleles respectively.   p2 = frequency of homozygous dominant genotype (AA)   q2= frequency of homozygous recessive gentotype (aa)   2pq= frequency of heterozygous genotypes (Aa).   We have given value of - p= 0.80 and q= 0.20   To calculate the frequency of homozygous recessive condition (aa) that is represented by q2- q2 = 0.20 × 0.20 = 0.0400  In percentage -  [0.0400/10000] ×100 = 4% Thus, option B) is the right answer.  
You might be interested in
Suppose when you clap your hands you hear the echo a few seconds later. What can you say about the size of this room?
defon
It's empty or fairly large, making the sounds from your hands bounce of the walls and therefore having it echo
8 0
3 years ago
Read 2 more answers
Which of the following are public health measures that help fight disease
antiseptic1488 [7]
Can you give me the options?

5 0
4 years ago
Anole lizards mainly eat small insects. Suppose an anole lizard saw a bright red butterfly and ate it, but was ill afterwards. F
Phoenix [80]

The answer is D. learned behavior.

A change in behavior of an organism takes place due an experience is called learning. Animals learn behavior in many ways. On such way is given the question that anole lizard ate bright red butterfly instead small insects which are its normal food and became ill. Anole lizard learned through experience that bright red insects are not its food. Thus, a learned behavior is one that an organism develops by encountering experience.    

6 0
3 years ago
Read 2 more answers
Which process occurs during the light-dependent reactions in photosynthesis?
kobusy [5.1K]

Answer:

A. Water molecules are split.

Explanation:

The light dependent reactions of photosynthesis require the energy in sunlight to proceed. Structures called photosystems which contain chlorophyll absorb the light from the sun to generate excited electrons, which are transferred to electron carriers ATP and NADH.

These electron carriers are used in the light-independent reactions of photosynthesis.

During this process,  the high energy electrons are passed to an acceptor molecule and replaced with an electron from water. This splitting of water produces H+ ions and oxygen as a byproduct. The splitting of water is called photolysis

3 0
3 years ago
Genetic engineering has many applications, including uses in the medical, agricultural, and environmental industries. Describe o
ivanzaharov [21]

Answer:

Genetic engineering has multiple applications in different fields. Genetic engineering is the process by which alterations are made at the genetic level so that the final product is superior in quality and yield.

Explanation:

Following are few of it's applications:

<u>Medical field</u>- Genetic engineering is been used to produce insulin artificially, human growth hormones, anti hemophiliac factors, vaccines and other drugs.

<u>Agricultural industry</u>- It has been used to synthesize  improvised crops which give better yield and are pest resistant. E.g Flavr savr, a species of tomato which is more juicy and larger in size than regular tomatoes.

<u>Environment</u>- With the introduction of herbicide resistant corn, farmers reduced the use of tractors which in turn reduced the amount of greenhouse gases. Also, by imparting disease resistance to plants, a lot of plants are prevented from dying. In addition, the biodiversity of an area can be maintained.

5 0
3 years ago
Other questions:
  • Animal lays eggs with a tough leathery watertight shell
    8·1 answer
  • The skeletal part of the musculoskeletal system: helps the body to create heat. protects the organs of the body. produces facial
    14·1 answer
  • Does the example ( picture ) describe science or pseudoscience?
    7·1 answer
  • How many homologous chromosome alignments are possible for independent assortment during meiosis?
    7·2 answers
  • What is the correct order of levels of organization in an organism, from the least complex to the most complex?
    15·1 answer
  • A plant breeder wants to breed a flowering plant species to produce seeds that will give a 50:50 mixture of blue and yellow flow
    9·1 answer
  • In a fruit fly experiment, grey body, normal winged (homozygous dominant) fruit flies were mated with black body, short winged (
    11·1 answer
  • 2 reasons why someone might selectively breed cats<br><br> Other then to stop allergies
    8·1 answer
  • There is much controversy surrounding stem cells and the use of them. Do you think the use of stem cells is ethical? Why or why
    11·1 answer
  • Destructi for D. unusual drought conditions<br> Pllsssss help
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!