Question

1.

Mendel's Law of Segregation says this:

Select one:

alleles are always paired

alleles separate during gamete formation

alleles that are dominant get into gametes more often

alleles that are recessive get into gametes more often

alleles stay together during gamete formation

2.

The use of the garden pea by Mendel was important because it has this ability.

Select one:

to produce only one color

to have a few traits to focus on

have several flower colors on one plant

to self fertilize

only reproduce with another, separate plant

3.

A test cross is used to:

Select one:

determine an unknown genotype using a homozygous recessive individual

determine if there are any alleles

determine if there are more than 2 pairs of alleles

determine an unknown genotype using a homozygous dominant individual

determine if there are 3 or more pairs of alleles

Answer 1

Ans:

1. alleles separate during gamete formation

Explanation: Mendel's Law of Segregation states that alleles of each trait existing in pairs segregate during from each other during gamete formation, not stay together. This law doesn't tell us that alleles are always paired. Both the alleles are equally often into gametes.

2.

to self fertilize

Explanation: The use of the garden pea by Mendel was important because it has this ability to self fertilize in one plant and produce two color (purple and white; not one or several color) bisexual flowers. Cross pollination is easily controlled. There are several traits in pea plant to focus on.

3.

determine an unknown genotype using a homozygous recessive individual

Explanation: Test cross is type of cross where F1 plant is crossed with homozygous recessive individual to know whether the genotype of dominant plant is homozygous or heterozygous. Homozygous dominant individuals is crossed with F1 plant in back cross, this is not a test cross. Each gene in test cross has one pair of alleles, not two or more pairs of alleles.