Punnett square review

This combination of alleles (AA) would be considered:

• Homozygous recessive

• Heterozygous

• Dominant Dominant

• Homozygous dominant.

Punnett squares help us determine the possible _____________ and _____________ of offspring.

• heterozygous and homozygous

• Genotype and phenotype

• Dominant and recessive

• DNA and Chromosome

In cats, the gene for hair color is controlled by (Bb) alleles.

Orange hair dominant. White hair is recessive.

A cat with white hair must have these alleles: ( )

• (bb)

• (BB)

• (B)

• (Bb)

The genotypic ratio of the offspring is:

• 1 AA : 3 Aa

• 1 aa : 3 Aa

• 1 AA : 2 Aa : 1 aa

• 2 Aa : 2 aa

Let's assume that having a long tail is dominant, and having short tails is recessive.

Looking at the Punnett square, how many offspring will have short tails?

• 1 out of 10

• 1 out of 4

• 3 out of 4 a

• All of them.

The image shows one chromosome from the father, and one from the mother. These chromosomes are the same size and carry the same genes.

These chromosomes are called:

• Coupled chromosomes

• Replicated chromosomes

• Homologous chromosomes

• Brother and sister chromosomes

The image shows a "Roan" cow. This cow is heterozygous (Rr) for hair color, and yet both white and red colors are showing.

What kind of dominance is this?

• Total dominance

• Half dominance

• Mixed dominance.

• Incomplete dominance

The difference between mitosis and meiosis is:

• Meiosis has 2 separation stages

• Mitosis is for gametes only

• Meiosis is for body cells

• Mitosis produces 4 somatic.

Check all the statements that are true.

• Mitosis replicates somatic (body) cells.

• Mitosis only happens a few times

• Meiosis produces gametes

• When two gametes combine, (n + n), a new somatic cell is formed (2n).

One thing that I wish we could talk/learn about in this class is?