Genetics Week 2 Quiz

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

The man who studied genetics and came up with genetics is

• Watson
• Crick
• Mendel
• Darwin

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

• 100% BB

• 75% BB and 25%Bb

• 50 % BB and 50% Bb

• 50% Bb and 50% bb

the passing of genetic traits from parent to offspring.

• heredity
• trait
• gene
• allele

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

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

Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?

• 50% tall and 50% short
• 75%tall and 25% short
• 100%short

Tags

NGSS.HS-LS3-1

What is the basic unit of DNA?

• amino acid
• protein
• nucleotide
• sugar