Answered: Why does more crossing over occur…

Name: Why does more crossing over occur between two distantly linkedgenes th
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: Why does more crossing over occur between two distantly linkedgenes than between two genes that are very close together on thesame chromosome?

Science

Biology

Why does more crossing over occur between two distantly linkedgenes than between two genes that are very close together on thesame chromosome?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 16QP: Assume that a meiotic-nondisjunction event causes trisomy 8 in a newborn. If two of the three copies...

See similar textbooks

Similar questions

Which non-disjunction event has more chromosome numberaberrations? Why?
An inversion heterozygote has the following inverted chromosome:What is the result if crossing over occurs between genes F and G onan inverted and a normal chromosome in this individual?
Why are the X and Y chromosomes not considered homologous even though they recombine at the PAR region?
When the tetrads are formed during meiosis, what is the benefit of crossing over?
In general, why do changes in chromosome structure or numbertend to affect an individual’s phenotype? Explain why somechanges in chromosome structure, such as reciprocal translocations,do not.
An inversion heterozygote has the following inverted chromosome:What is the result if crossing over occurs between genes F and G onan inverted and a normal chromosome in this individual?Make a drawing. Predict the outcome.
Why is the frequency of recombinant gametes always half the frequency of crossing over?
How did the cessation of crossing-over contribute to the disparity between the X and Y chromosomes?
What effect does crossing over have on linkage?
In meiosis, after telophase I, do other cells (comparing one another) have the same combination of genes in each cell? Is it necessary for them to be the same?
A woman with an abnormally long chromosome 13 (and a normalhomolog of chromosome 13) has children with a man with anabnormally short chromosome 11 (and a normal homolog of chromosome 11). What is the probability of producing an offspringthat will have both a long chromosome 13 and a short chromosome11? If such a child is produced, what is the probability that thischild will eventually pass both abnormal chromosomes to one ofhis or her offspring?
in the experiment of following chromosomal dna mvement througgh meiosis, why. do you use non-sister chromatids to demobstrate crossing over? what combinatiobns of alleles could result from a crossover between BD and bd chromosomes? Identify two ways that meiosis contributes to genetic recombination. Why is it necessary to reduce the number of chromosomes in gametes, but not in other cell?