Jan 13 - Multiple Gene Inheritence

How many different genotypes of a gamete can a human produce solely via independent assortment?

2²3

What is the chance that paternal chromosome 1 and 2 are transmitted to a single gamete in a human?

¼

Looking at a dihybrid cross what are the expected ratios?

9:3:3:1

What does a dihybrid testcross produce?

Equal number of parental and recombinant type

What kind of information can you get from a testcross?

Get equal number of equal and recombinant types yo ucan determine the genotypes of gametes that a testee can produce

During a testcross what happens if A and B are on the same chromosome?

Ratio shows that the parental types are much more likely

What is the chi-square test?

A way of determining if the observed values significantly deviate from expected values

What is the chi-square test formula?

Sum of (observed-expected)²/ expected

In science what is the confidence level that we like?

95%

What can you correlate with the chi-square test for confidence level?

p value - the tables correlate in a table

What does p=0.05 mean?

5% chance of getting observed number even if independent assortment is true