Biology Ap Homework Help Prize awarded to helpers
Help me please-- I'll draw y'all if y'all help me on each question
1.) Why is it necessary to find the distance between Gene B and Gene C on a chromosome map?
2.) Suppose that there were genes-- X, Y ,and Z-- on a chromsome-- how would you find their arrangment?
3.) Suppose that a gene-- Q-- was located near the end of the chromsome. You know that in addition to Gene Q, there are many other genes on the chromosome. How would recombination data allow one to predict that gene Q was located closest to the end of the chromsome
4.) What conclusion might I draw if no recombination occurred between two genes that are known to be located on the same chromsome?
5.) Why does crossing-over only occur in organisms that reproduce sexually?
CHEERS
3 Comments • Newest first
4. No changes were made and thus the chromosome stay the same
5. Meiosis Prophase I is the reason why. Asexual reproduced by mitosis
1.) So you know how long it will take to get there.
2.) Poking them with a stick.
3.) Because the Gene is for clowns and the baby was Ronald McDonald.
4.) They didn't touch/combine?
5.) Because organisms that produce asexually get the same DNA as the parent as they have no DNA to pair with?
http://ca.answers.yahoo.com/dir/index;_ylt=AqKsey8ym2I7qeMF31Okem7MXn1G;_ylv=3?sid=396545209
Just trying to help xD