Genes, Alleles and Punnett Squares

Heterozygous is when...

• the alleles are the same

• the alleles are different

• the alleles are absent

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive

• dominant

• lower case letter

T - tall and t = short

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

• tt

• Tt

• Bb

G = green, g = yellow

The genotype for a yellow plant is...

• GG

• Gg

• gg

B = brown fur b = white fur

In the punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

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

• 0 %

• 25%

• 50%

Dominant alleles are represented by a:

• Male gene

• lowercase letter

• capital letter

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Tags

NGSS.HS-LS3-1

What you see, or the physical appearance.

• Genotype

• Phenotype

• Homozygous

AA and Aa always show up as

• dominant
• recessive

Tags

NGSS.HS-LS3-2