Punnett Squares Basics

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

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

• recessive
• dominant
• lower case letter
• both 

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

NGSS.HS-LS3-2

The alleles for plant color are: G = green, g = yellow

The genotype for a yellow plant will be:

• GG
• Gg
• gg
• all of the choices result in yellow

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following alleles is homozygous recessive?

• Tt
• tt
• TT
• t

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• recessive
• dominant
• lower case letter
• both 

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

"AA" and "Aa" always show up in the offspring as

• dominant
• recessive