Mendelian Genetics Review

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

Tags

NGSS.HS-LS3-1

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

• one
• two
• three
• five

Tags

NGSS.HS-LS3-1

What is a phenotype?

• The genetic make up (code)

• The physical expression of a gene

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

• homozygous

• hetrozygous

• protein

• chromosome

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

• protein

• homozygous

• heterozygous

• genotype

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

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

One form of a gene is called_______________

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

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which is the correct phenotype for this organism?

• BB

• blue scales

• green scales

• bb

Tags

NGSS.MS-LS4-4

NGSS.MS-LS3-1

Dominant alleles are written as-

• capital letters

• lowercase letters

• both

• neither