Dominant and Recessive Genes

When Mendel crossed homozygous tall pea plants with heterozygous short pea plants, the offspring were all __________

Tags

NGSS.HS-LS3-1

Having two like genes for the same trait.

• heterozygous

• homozygous

Tags

NGSS.HS-LS3-1

Having two unlike genes for a trait.

• homozygous

• dominate

• heterozygous

• recessive

Tags

NGSS.HS-LS3-1

You received one gene(s) from each _________ for each trait.

• parent

• chromosome

• allele

• genotype

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which is a true statement about this picture?

• Brown is recessive

• Brown is dominant

• Blue is dominant

• Blue is codominant

Tags

NGSS.HS-LS3-1

The genotype below that is heterozygous

• BB

• Bb

• bb

A trait that shows only if both parents pass it on

• recessive

• dominant

• codominan

Which of the following alleles is homozygous (purebred) recessive?

• Tt

• tt

• TT

• t

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

• GG

• Gg

• gg

• all of the choices result in yellow

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt

• Tt

• Bb

• TT

Tags

NGSS.HS-LS3-1