Sunday, March 10, 2013

Determining the number of possible Genotypes at a locus given the number of Alleles present

Genetics page 106- Chapter 5

More than two alleles (multiple alleles) may be present in a group of individual organisms, although each individual diploid organism still has only two alleles at that locus.

Concept Check 5- Genetics -college textbook for Biology 305

How many genotypes are present at a locus with five alleles?

solution:

use the equation on page 104 :   [n(n+1)]/2 

plug in the values:  5(5+1)/2   =  5(6)/2 = 30/2 = 15 (choice C)

The answer is provided at the end of the chapter on page 126, but they don't explain how they got the answer.

No comments:

Post a Comment

span.widget-item-control{ display:none; }