Punnett Squares Review

This is the combination of two alleles that are different from one another:

• homozygous

• heterozygous

• phenotype

• trait

The letters that make-up the genetic code for a trait

• genotype

• heterozygous

• phenotype

• trait

This is the combination of two alleles that are the same:

• genotype

• homozygous

• phenotype

• trait

The physical appearance of the allele combination the offspring receives:

• genotype

• homozygous

• phenotype

• dominant

Black fur (B) is dominant. Find the probability of a black offspring in a cross: bb x bb. 

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Look at the Punnett Square. What's the probability of having the recessive offspring?

• 100%

• 75%

• 50%

• 25%

What are the parents' genotypes?

• Homozygous for brown eyes
• Heterozygous for brown eyes
• Homozygous for blue eyes
• Heterozygous for blue eyes

Tags

NGSS.HS-LS3-1

A type of gene that can be hidden is called

• genotype

• recessive

• dominant

• allele

A section of the DNA strand that determines a specific trait

• gene
• trait
• chromosome
• allele

Tags

NGSS.HS-LS3-1

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes
• dominant
• recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2