Warm-Up: Monday, 4/18

An offspring will receive how many alleles from each parent to determine a specific trait?

• one
• two
• three
• five

Having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

One form of a gene is called_______________

• a DNA
• a Phenotype
• a trait
• an allele

If green is dominant over purple, then what is the genotype for this individual?

• Purple
• Green
• GG
• gg

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having the heterozygous version or short tusks?

• 0%
• 25%
• 50%
• 75%

What is the genotypic ratio of the offspring?

• 3:1

• 1:3

• 1:2:1

• 2:2

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

• It is BB.
• It is Bb
• It is brown
• It is bb.

This punnett square shows a cross between

• A hybrid Parent and a Homozygous parent
• A heterozygous parent and a heterozygous parent
• Two homozygous parents
• Two Hybrid Parents

In plants, tall is dominant to short.

Cross one homozygous dominant with one homozygous recessive plant.

What is the phenotypic ratio?

• 1:2:1

• 2:2

• 4

In plants tall is dominant to short.

Cross one homozygous dominant with one heterozygous plant.

What is the genotypic ratio?

• 1:2:1

• 2:2

• 4