Mendelian Genetics

A version of a gene is called a(n)

• allele

• characteristic

• specific gene

• trait

Tags

NGSS.HS-LS3-1

If "T" is the dominant allele for tall and "t" is the recessive allele for short, then what phenotype would "Tt" produce?

• tall
• short
• medium
• not enough info

In the Punnett Square below, which genotype belongs in the missing square?

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a heterozygous genotype, the ___________ allele is expressed in the phenotype.

• recessive
• dominant
• homozygous

• heterozygous

Tags

NGSS.HS-LS3-1

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What is the probability that the offspring will express the dominant trait?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-3

The alleles "tt" is which genotype?

• Homozygous Dominant

• Heterozygous

• Homozygous Recessive

• Heterozygous dominant

If a heterozygous tall pea plant is crossed with a short pea plant (recessive), what are the possible genotypes of the future offspring?

• 100% Tt
• 50% Tt, 50% tt
• 75%Tt, 25%tt
• 25%TT, 50%Tt, 25%tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

If yellow peas are dominant, then a heterozygous yellow pea plant's genotype would be:

• YY
• yy
• Yy
• Yg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A phenotype is the ___________ of an organism.

• Dominance

• Physical appearance

• Recessiveness

• Alleles / Genes

Tags

NGSS.HS-LS3-1