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
mars1129 [50]
3 years ago
5

Genes a, b, and c are known to be in that linear order in an organism. A testcross is done that yields 20 double crossover proge

ny out of a total of 1000 offspring. Assume that there is no interference.
(a) Type a genetic map showing the distances between these genes. Is there more than one possible map?
(b) What would the distances be if there was 10% interference?
(c) What number of double crossover progeny would be expected if there was interference of 15%?
Biology
1 answer:
larisa [96]3 years ago
4 0

Answer:

Explanation:

The observed frequency of the double crossovers (DCOs) is 20/1000, or 0.02. If there is no interference then this will be the same as the expected, which is just the product of the single crossover frequencies, that is, SCO frequency (a-b) x SCO freq. (b-c) = 0.02.

(a) Any combination of map distances whose product (a-b) x (b-c) = 0.02 is possible. However, three are most likely:

a 20 mu b 10 mu c

a 10 mu b 20 mu c

a 14.14 mu b 14.14 mu c

(b) The distances would be exactly the same.

(c) The expected number of DCO progeny would be 17.

You might be interested in
What are two ways scientists classify<br> organisms?
elena-s [515]

Answer:

All living organisms are classified into groups based on very basic, shared characteristics. Organisms within each group are then further divided into smaller groups. These smaller groups are based on more detailed similarities within each larger group.

3 0
3 years ago
A scientist samples a population of butterflies and finds that 56% are heterozygous at a particular locus. If the population is
d1i1m1o1n [39]

0.44  the frequency of the homozygous individuals in this population.

What is Hardy-Weinberg principle ?

The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

From the Hardy Weinberg Law of Population and Genetics,

We have

x²+2xy+y²=1 and

x+y=1

where

x = frequency of the dominant allele in the population

y = frequency of the recessive allele in the population

x2 = percentage of homozygous dominant individuals

y2 = percentage of homozygous recessive individuals

2xy = percentage of heterozygous individuals

Given 2xy = 0.56

from here, y=0.28/x, (the frequency of the recessive allele ) can be obtained

we need to find 'x'

recall, x+y=1, x=1-y

substituting this gives us

y=0.28/(1-y), which becomes,

y(1-y)=0.28

y²- y + 0.28 (quadratic equation)

Solving this to find 'y' gives two imaginary values of y = 0.44 but ,

There is no imaginary solution  .

Learn more about Hardy Weinberg Law of Population

brainly.com/question/14669053

#SPJ4

4 0
2 years ago
What are 2<br> factors that prevents joints from rubbing and wearing down your bones
inessss [21]
A layer of smooth cartilage at their ends, which cushions the bones and prevents them from rubbing directly against one another. The whole joint is also enclosed in a synovial capsule, which is full of synovial fluid. The synovial fluid acts like the oil in an engine, lubricating the joint and preventing the cartilage from becoming worn down.
8 0
3 years ago
Read 2 more answers
bacterial cells that make copies of themselves through binary fission are not reproducing true or false
ahrayia [7]
False, when more cells are made it is reproducing.

3 0
3 years ago
The competitive exclusion principle states that two organisms cannot fill similar niches.
kap26 [50]
True. It also states that they cannot compete for the same resources.<span />
4 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following represents to carbon dioxide molecules
    7·1 answer
  • What is the medical term for infection of the urinary bladder?
    7·1 answer
  • How does the environment impact if an organism shows signs of life?
    15·1 answer
  • Researchers determine that the biodiversity in a woodland region is declining. They identify two major threats to the region's b
    11·2 answers
  • Question 4 Unsaved
    14·1 answer
  • True or false, heart muscle can depolarize spontaneously in the absence of any external stimulation
    9·2 answers
  • What word describes a membrane that only allows certain things through it?
    11·1 answer
  • PLEASE HELP .............
    15·1 answer
  • If a woman who is heterozygous for the hemophilia trait and a hemophiliac man have children, what percentage of their sons would
    10·1 answer
  • Why can’t most pathogens infect your skin?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!