Unit 6 Quiz 2

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

What is a phenotype

• The genetic make up (code)
• The physical trait

having two different genes for a trait (sometimes called hybrid).

• protein
• homozygous
• heterozygous
• genotype

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

Which of the following genotypes is a purebred?

• Bb
• Gg
• bb
• Dd

 Dominant alleles are-

• capital
• lowercase
• both
• neither

 Recessive alleles are-

• capital
• lowercase
• both
• neither

Tt is-

• homozygous dominant
• homozygous recessive
• heterozygous
• none of these