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
Vikentia [17]
3 years ago
5

In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative individuals do not. If the Rh

-positive phenotype is produced by a dominant gene (A), and the Rh-negative phenotype is due to its recessive allele (a), what is the frequency of the Rh-positive allele of 84% of a population is Rh-positive
Biology
1 answer:
bixtya [17]3 years ago
3 0

Answer: 60%

Explanation:

In population genetics, the Hardy-Weinberg Principle states that the genetic composition of a population remains in equilibrium as long as no natural selection or other factors are active and no mutations occur.

The frequencies of the genotypes of an individual locus will be set to a particular equilibrium value.<u> It also specifies that these equilibrium frequencies can be represented as a simple function of the allelic frequencies at that locus</u>. In the simplest case, with a locus with two alleles A and a, with allele frequencies of p and q respectively, the principle predicts that <u>the genotypic frequency for the dominant homozygous AA is p^2, that of the heterozygous Aa is 2pq and that of the recessive homozygous aa, is q^2. The allele frequency of a is represented as p and the frequency of recessive allele is q.</u>

The three genotypes AA : Aa : aa appear in a ratio p² : 2pq : q². If we add them up, we get the unit:

p^2 + 2pq + q^2 = (p + q)^2 = 1  

And p + q = 1

<u>Rh-positive genotypes are represented as AA (homozygous dominant) or Aa (heterozygous) since the presence of a single dominant allele is sufficient to express the phenotype. While Rh-negative genotypes are represented as aa. </u>

If 84% of the population is Rh-positive, that means that this percentage includes all those who are AA and Aa. Then 16% are aa.

F(aa)=q^2=0.16

then F(a)=q=0.4

And since p + q = 1, p + 0.4 = 1, then p is 0.6

We can also calculate the rest, then F(AA)=p^2= 0.36

So F(Aa)= 2pq = 2 x 0.6 x 0.4 = 0.48

Notice that 0.36 + 0.16 + 0.48 = 1

You might be interested in
Which bony landmark can be felt and seen, and is commonly used to help determine where to give an intramuscular injection on the
lisov135 [29]
The bony landmark that <span>can be felt and seen, and is commonly used to help determine where to give an intramuscular injection on the lateral surface of the thigh is called <u>the greater trochanter.
</u>
<u />The illiac crest is found on the pelvis, the lateral epicondyle is in the arm, and the remaining options are too small to be felt and seen. So the correct answer has to be the greater trochanter found on the femur, or the thigh bone.<u>
</u>
</span>
6 0
3 years ago
Which conclusion about the sand on a beach below a sea cliff is most justified?
kolbaska11 [484]

The correct answer is that some of the sand originayed from the sea-cliff rock itself.

Vertified.

Happy Science!

4 0
3 years ago
Different types of healthy tissues have different mitotic indices—the rate of dividing cells to the total number of cells in a s
Pavel [41]

Answer:

Cells of skin, for instance, have highest mitotic index.

Explanation:

Many cells are capable of dividing rapidly. <u>For example</u>, in plants, the cells near the root tip in the apical meristem divide rapidly to push through the soil because the root cap detects the gravity and direct rapid division and growth of cells near the tip.

If we take muscle, skin, kidney, and lung as examples that are given in real question, <u>skin cells have the highest mitotic index because they need to get replaced most frequently</u>.  

3 0
3 years ago
Miles is 75 and he has been diagnosed with presbycusis. what can he do to help him cope with this problem
ddd [48]
There are several ways to treat or cope with presbycusis (age-related hearing loss). Here are some of ways:
1. Hearing Aid(s)
2. Implants (Cochlea, Middle ear) - involves surgical operation
3. Lip reading or speech reading training 
4. Hearing assistive devices - sound amplifying devices (cellphones, tablets, etc.)

It would be best to refer to an audiologist or otolaryngologist to for extensive diagnostic evaluation of the gravity of hearing loss and seek proper medical treatment.
5 0
3 years ago
What is the shape of the bacteria shown above?
kozerog [31]
Bacteria image? So i can help 
5 0
3 years ago
Other questions:
  • In a prokaryotic cells most ribosomes are
    14·2 answers
  • When a comet nears the sun what happens to its nucleus
    10·2 answers
  • An enormous rifting occurred, causing massive floods of basaltic lavas and the release of large amounts of gas. This is thought
    15·2 answers
  • As an experiment, you infect bacteria with an unknown virus to see how the bacteriophage affects the bacteria. After a few days,
    11·1 answer
  • 6.The original source of all the energy in the ecosystem is the
    14·2 answers
  • How is energy and forces related
    8·1 answer
  • Need help ASAP, TY plz answer if you know it
    10·1 answer
  • I have some questions don't get and this is due in less than 7 and a half hours :D
    9·1 answer
  • State at least <br>5 importance of soil to agricultural​
    12·1 answer
  • Analyze the following two DNA sequences Sequence 1 GTT GCA GTA CTA Sequence 2 GTT GAA GTA CTA What is the difference between the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!