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

NGSS.HS-LS3-2

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

• one
• two
• three
• five

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

What is a phenotype

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

Tags

NGSS.HS-LS4-4

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

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

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

Tags

NGSS.HS-LS3-1

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

• Purple
• Green
• GG
• gg

Tags

NGSS.HS-LS3-1

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

Tt is-

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