Genetics Unit 3

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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NGSS.HS-LS3-1

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Squidward has light blue skin, and his genotype for this trait is Bb. Which of the following would describe Squidward?

• Purebred

• Hybrid

• Homozygous

• Sex-linked

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NGSS.HS-LS3-1

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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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NGSS.HS-LS3-1

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

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NGSS.HS-LS4-3

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What is a phenotype

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

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the passing of genetic traits from parent to offspring.

• heredity
• trait
• gene
• allele

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NGSS.HS-LS3-1

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

• homozygous
• hetrozygous
• protein
• chromosome

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NGSS.HS-LS3-1

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

• protein
• homozygous
• heterozygous
• genotype

Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?

• height
• the scar
• ability to swim
• ability to play drums

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NGSS.HS-LS3-1

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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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