Unit 6 Review: Genetics

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

• one
• two
• three
• five

Tags

NGSS.HS-LS3-1

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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-LS3-3

Looking at this pedigree, how many female family members are carriers?

• 1
• 3
• 10
• 7

If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?

• sex-linked trait
• polygenic trait
• codominant trait
• incomplete dominance trait

Tags

NGSS.HS-LS3-1

Colorblindness is a recessive x-linked trait.
Which genotype represents a male with normal vision?

• X^NX^N
• XY^N
• X^NY
• XⁿY

If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true?

• All sons will have hemophilia
• All daughters will have hemophilia
• 50% of daughters and 50% of sons have hemophilia
• 0% of sons have hemophilia but 100% of daughters are carriers

Tags

NGSS.HS-LS3-1