Heredity & Punnett Square Quiz Review

In cows, black hair (B) is dominant over white fur (b). If a hybrid black haired cow mated with a purebred white cow, what percentage of the offspring will have black fur?

• 50%

• 25%

• 75%

• 100%

Answer explanation

Remember that hybrid = mixed, one uppercase and one lowercase Bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The different versions of the same gene are called -

• genotype

• gametes

• alleles

• chromosomes

Which of the following is an example of a hybrid genotype?

• AA

• Ab

• Aa

• bb

The physical appearance of an organism is called __________.

• genotype

• phenotype

• allele

• chromosomes

In pea plants, tall plants (T) is dominant over short plants (t). If you cross a purebred tall plant with a purebred short plant, what percentage of the offspring will be short?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The only way for an organism to show the recessive trait is...

• by having two lowercase alleles

• having two uppercase alleles

• having one uppercase and one lowercase alleles

• having only one allele

Which is an example of a genotype?

• Tt, Tall

• tt, Short

• Tt, tt

• Tall, Short

If brown eyes (B) are dominant over blue eyes (b), what is the genotype of an individual that is homozygous blue eyed?

• BB

• Bb

• bb

• blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is NOT an inherited trait?

• Hair texture

• Blood type

• Language you speak

• Freckles

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What type of trait masks, or covers up, the other trait when both are present?

• dominant

• hybrid

• recessive

• homozygous