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

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

• one
• two
• three
• five

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Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

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

• homozygous
• hetrozygous
• protein
• chromosome

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NGSS.HS-LS3-1

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

• 0 %
• 25%
• 50%
• 75%

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NGSS.HS-LS3-1

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One form of a gene is called_______________

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

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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

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NGSS.HS-LS3-1

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 Recessive alleles are-

• capital
• lowercase
• both
• neither

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The "Father of Genetics"

• Isaac Newton
• Gregor Mendel
• Albert Einstein
• Robert Hooke

The observable traits of an organism are known as its

• allele
• dominance
• phenotype
• genotype

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