Lab 7 Genetics

Question 0

The physical appearance of an organism is it’s

Answer 0

Phenotype

Question 1

In a dihybrid cross…

Answer 1

Two traits are being studied

Question 2

An allele whose expression is completely masked by the expression or effect of its..

Answer 2

Recessive

Question 3

When both alleles for a trait are recessive, the organism is _________ for the trait.

Answer 3

Homozygous

Question 4

A punnett square is used to determine

Answer 4

Possible genetic outcomes of a cross

Question 5

One of mendel’s principles state alleles are sorted into gametes independent of the movement of other alleles. This is..

Answer 5

The law of independent assortment

Question 6

Possible gamete allelic genotypes produced by an individual of genotype AaBb are…

Answer 6

AB, Ab, aB, and ab

Question 7

A cross between flowers produces offspring with the following phenotypes: 24 red and tall, 12 red and short, 12 white and tall, and 6 white and short. What is the ratio of the phenotypes?

Answer 7

4:2:2:1

Question 8

A female who has one allele for colorblindness

Answer 8

• has normal vision

- is a carrier for colorblind trait

Question 9

The genotype(s) for blood type A is/are:

Answer 9

AO and AA