Genetics

The position on a chromosome at which a gene is located is called a…

locus

Which two mechanisms contribute to genetic diversity?

meiosis and crossing over

You have decided to spend money to have all of your potential breeders tested for the presence of a lethal allele. You then breed only those who tested negative. This is an example of:

marker-assisted selection

The mating of an individual with a dominant phenotype to one that is known homozygous recessive is termed a:

testcross

What is the mating amongst a generation

inter se mating

What is the mating of an F1 to an individual from one or the other of the purebreeding strains used to create F1?

backcross

What is the phenotypic ratio you would expect from a dihybrid cross?

9:3:3:1

What is the simplest (3 word) explanation of Mendel’s Law of Segregation?

alleles sort randomly

Mammalian gametic cells are diploid T/F

false

A missense mutation is one that codes for a premature stop T/F

false