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
Marina CMI [18]
3 years ago
6

A rare genetic disease which is due to a recessive allele (a) and that is lethal when homozygous, occurs within a specific popul

ation at a frequency of one in a hundred thousand. In other words, one out of a hundred thousand individuals are homozygous recessive with the disease. How many individuals in a town with a population of 20,000 can be expected to carry this allele?
Biology
1 answer:
valkas [14]3 years ago
5 0

Answer:

40 individuals

Explanation:

The homozygous recessive percentage is equal to q2.

Recessive genotype frequency, q 2 is 1/1000000  = 0.000001  

therefore, q = \sqrt{q2}  = \sqrt{0.000001 }  = 0.001 =  allele "a" frequency  

and p + q = 1, thus, p = 1 – q = 1 – 0.001 = 0.999  

thus, the frequency of allele a = q = 0.001  and the frequency of allele A = p = 0.999

Carriers are heterozygous and are equal to 2pq.  

So, 2pq = 2  x 0.999 x 0.001 x  20,000 = 39.96 (round of to 40)

Hence, 40 individuals will be expected to carry the recessive allele.

You might be interested in
A old Cell is called what?​
kari74 [83]
OLD CELL BRO like duh
5 0
3 years ago
using figure 9-1, which pairing matches the structures shown in the cell diagrams with the processes that take place within thos
ki77a [65]

The correct answer is D.        E. Photosynthesis and cellular respiration

7 0
3 years ago
Read 2 more answers
Sickle cell anemia is a mutation that results in abnormally shaped blood cells. Which two of the following molecules are changed
iVinArrow [24]

Sickle cell anemia is caused by a single letter mutation so transcription will lead to synthesis of a different <u><em>mRNA</em></u> molecule . The different mRNA molecule will lead to a different <em><u>protein</u></em> where a single amio acid is different(there is valine instead of glutamic acid)

6 0
2 years ago
In which process do animals turn food energy into a form their bodies can use?
Artist 52 [7]

Answer:

The entire process is nutrition cycle but more precisely assimilation

Explanation:

6 0
3 years ago
What subatomic particles make up the nucleus of an atom? Check all that apply.
irina [24]

Answer:

• neutrons

• protons

Explanation:

The nucleus is made up of two types of subatomic particles, that is the protons and neutrons.

5 0
2 years ago
Other questions:
  • A 45 yr old female presents with abdominal guarding and ridgidity. the upright x ray is attached. what does "a" indicate virgini
    7·1 answer
  • When using a​ bag-mask device, the proper ventilation rate for a child with a pulse​ is:?
    14·1 answer
  • What type of organisms reproduce sexually ?
    11·1 answer
  • If one species is split into two populations in two different places, natural selection may drive them to become two different s
    9·1 answer
  • Hyposecretion of what hormone could cause the symptoms of low basal metabolic rate, weight gain, fatigue, slowed heart rate, dep
    7·1 answer
  • In Mendel's work with peas, an F1 hybrid (smooth yellow) was crossed to the recessive (wrinkled green) parent type. In terms of
    11·1 answer
  • Which of the following is a way that new DNA can be introduced to bacteria?
    8·1 answer
  • Sex-linked traits are passed from parent to child on a sex
    15·1 answer
  • In humans, an egg develops into a male offspring if it
    13·1 answer
  • innate immune suppression by sars-cov-2 mrna vaccinations: the role of g-quadruplexes, exosomes, and micrornas
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!