Genetics Quiz Review

The small segments of a chromosome that help code for a trait are called —

• nucleotides

• genes

• proteins

• genotypes

Examine the Punnett square, where the dominant (B) and recessive (b) alleles for hair color are shown. If brown hair is dominant over blonde hair, what is the genotype of the parent with brown hair?

• Bb

• BB

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following genotype could be a hybrid?

• RR

• Rr

• RR and rr

• rr

Tags

NGSS.MS-LS3-2

If widow's peak (W) is dominant over straight hairline (w), what is the genotype of an individual that is a purebred for widow's peak?

• W w

• W W

• W x

• w w

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In guinea pigs, brown fur (B) is dominant over white fur (b). If two pure breed parents are crossed, what percentage of the offspring will be hybrid?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.MS-LS3-2

The physical appearance of an organism is referred to as its —

• genotype

• phenotype

• allele pattern

• double helix shape

Tags

NGSS.MS-LS4-4

NGSS.MS-LS4-2

Examine the given punnett square. What are the genotypes of the parents?

• rr, rr

• Rr, Rr

• RR, rr

• rr, Rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Examine the given Punnett square. In the Punnett square, White petal color (W) is dominant over purple petal color (w). Of the four offspring, how many will have the white phenotype?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What could represent the genotypes of an organism?

• Tall, red

• Rr, TT

• Wrinkled, gY

• Tt, green

If the tall trait is dominant over the short trait, which would be used to represent the dominant trait?

• T

• s

• t

• S