Genetics and Heredity

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

• 0%

• 25%

• 50%

• 75%

In animals, shaggy fur is dominant to short fur. The Punnett Square shows the genotypes of the offspring of a shaggy fur animal and a short fur animal. What were the genotypes of the parents?

• FF and FF

• Ff and ff

• ff and ff

• Ff and Ff

What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness? 

• 0 in 4
• 1 in 4
• 2 in 4
• 4 in 4

Tags

NGSS.MS-LS3-2

Heterozygous is when...

• the alleles are the same.

• the alleles are different.

• the alleles are absent.

• the alleles are present.

Tags

NGSS.MS-LS4-4

Hair color, height, eye color and freckles are examples of human traits. What do we call the physical expression of the genetic material of an organism?

• genetics

• heredity

• genotype

• phenotype

Tags

NGSS.MS-LS4-4

If a black guinea pig (BB) and a white guinea pig (bb) mate, there is a ______ chance that a white guinea pig will be born.

• 0%

• 25%

• 50%

• 75%

• 100%

A dominant allele is represented by a ______ letter.

• lower-case

• capital

T = tall and t = short

In the punnett square shown, what belongs in the missing square

• tt

• Tt

• Bb

• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The genotypes AA and Aa always show up as the __________ phenotype.

• dominant

• recessive

Tags

NGSS.HS-LS3-1

Which of the following genotypes is heterozygous?

• Bb

• BB

• bb

• B