Genetics

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

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

• one

• two

• three

• four

Which of the following is a phenotype?

• BB

• Bb

• bb

• Blue Eyes

What is a phenotype

• The genetic make up (code)

• BB, Bb, bb

• The physical trait

• none of the above

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

• Homozygous

• Heterozygous

• Chromosome

• DNA

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

• Hidden allele

• Recessive allele

• Dominant allele

• Present allele

Snapdragon flowers come in red, pink and white. What type of inheritance is this?

• Complete Dominance

• Codeminance

• Incomplete Dominance

• Polygenic Inheritance

Incomplete dominance means that the traits are

• expressed equally

• recessive

• dominant

• blended

Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?

AA x aa

• AA

• Aa

• aa

• Brown Fur

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

• Purple

• Green

• GG

• gg