frequency?

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
biohelp22
Garter
Garter
Posts: 14
Joined: Sun Apr 23, 2006 6:52 am

frequency?

Post by biohelp22 » Mon Apr 24, 2006 8:27 pm

You sample a population of butterflies and find that 42% are heterozygous for a pareticular gene. what would be the frequency of the recessive alle in this population?

.09
.3
.49
.7
cant be determined

i think its .7 but im not sure

sdekivit
King Cobra
King Cobra
Posts: 586
Joined: Sat Jul 30, 2005 7:16 pm
Location: holland
Contact:

Post by sdekivit » Mon Apr 24, 2006 8:51 pm

can't be determined

heterozygous individuals have the frequency 2 * p * q

--> 2 * p * q = 0,42

now what are the correct numbers for p and q ? different combinations are possible.

You can't determine what the frequency of the recessive allele is with only this number.

and even though it would be 0,7, why now q = 0,7 and not p = 0,7 (while the other allelefrequency is 0,3) ?

biohelp22
Garter
Garter
Posts: 14
Joined: Sun Apr 23, 2006 6:52 am

Post by biohelp22 » Mon Apr 24, 2006 8:59 pm

i hate when theres questions like that, they always trick me
thanks for the help

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest