ap distance in cM can be estimated:Question 7Answera.by the number of parental offspring observed in a testcross divided the total number of offspringb.by the number of recombinant offspring observed in a testcross divided by 2c.by the number of recombinant offspring observed in a testcross divided the total number of offspringd.by the number of parental offspring observed in a testcross divided the number of recombinant offspringe.by the number of recombinant offspring observed in a testcross divided the number of parental offspring
Question
ap distance in cM can be estimated:Question 7Answera.by the number of parental offspring observed in a testcross divided the total number of offspringb.by the number of recombinant offspring observed in a testcross divided by 2c.by the number of recombinant offspring observed in a testcross divided the total number of offspringd.by the number of parental offspring observed in a testcross divided the number of recombinant offspringe.by the number of recombinant offspring observed in a testcross divided the number of parental offspring
Solution
The distance between two genes in centimorgans (cM) can be estimated by the number of recombinant offspring observed in a testcross divided by the total number of offspring. So, the correct answer is option c.
Here's the step-by-step process:
-
Perform a testcross. This is a cross between an individual with an unknown genotype and an individual that is homozygous recessive for the trait in question.
-
Count the number of recombinant offspring. These are the offspring that have a different combination of traits than either parent.
-
Count the total number of offspring.
-
Divide the number of recombinant offspring by the total number of offspring.
-
Multiply the result by 100 to get the distance in centimorgans (cM).
This method is based on the principle that the frequency of recombination between two genes is proportional to the distance between them. The greater the distance, the more likely that recombination will occur.
Similar Questions
To construct linkage maps, scientists estimate the distance between genes on the same chromosome based on the ______, as indicated by the percentage of recombinant offspring.Multiple choice question.number of chromosomesnumber of gametes producedcrossover frequencytime for meiosis to be complete
To construct linkage maps, scientists estimate the distance between genes on the same chromosome based on the ______, as indicated by the percentage of recombinant offspring.
The map of a chromosome interval is:A——10 m.u.——B——40 m.u.——CFrom the cross A b c / a B C × a b c / a b c, how many double crossovers would be expected out of 1000 progeny, if no interference is present?Question 11Answera.20b.40c.5d.10e.80
The results of pedigree analysis are less definitive than breeding experiments because the small size of human families causes Blank______.Multiple choice question.differences in chromosome segregation during meiosisfailure of independent assortmentlarge sampling errors
What is the probability that a cross between AaBbDd and AAbbDd parents would produce an AAbbdd offspring?Group of answer choices1/81/401/16
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.