Genetics Quiz Practice

The Punnett square in Figure 11–2 shows that the gene for pea shape and the gene for pea color

• assort independently
• have the same alleles
• are linked
• are always homozygous

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NGSS.HS-LS3-1

The man who studied genetics and came up with genetics is

• Watson
• Crick
• Mendel
• Darwin

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-LS3-2

What is a phenotype

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

the passing of genetic traits from parent to offspring.

• heredity
• trait
• gene
• allele

If T=Tall & t=short, what is the genotypic ratio?

• 1:3
• 3:1
• 1:2:1
• 2:2

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NGSS.HS-LS3-2

A cross of a Green chicken (GG) with a white chicken (WW) produces all speckled offspring (GGWW). This type of inheritance is known as

• incomplete dominance
• polygenic inheritance.
• codominance
• multiple alleles.

A male and female bison that are both heterozygous for normal skin pigmentation (Aa) produce an albino offspring (aa).
Which of Mendel’s principles explain(s) why the offspring is albino?

• dominance only
• dominance and segregation
• independent assortment only
• segregation only

In humans, a male has...

• one X chromosome only.
• two X chromosomes
• one X chromosome and one Y chromosome
• two Y chromosomes.

What genotype is missing from this Punnett Square?

• RrYy
• RRYY
• rryy
• RrYY

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NGSS.HS-LS3-2

NGSS.HS-LS3-1