Punnett Square Practice

Dominant or recessive?
tt

• Dominant 
• Recessive

Dominant or recessive?
Dd

• Dominant
• recessive
• neither
• homozygous

What should students use to identify the percent chance of a trait being passed down from a parent to its offspring?

• a graph
• a flow chart
• a data table
• a Punnett square

Which statement best supports why many offspring look similar to their parents?

• Offspring inherit characteristics from one parent.
• Offspring inherit characteristics from both parents.
• Parents choose which characteristics to pass on to their offspring.
• Parents choose to change their appearance to match that of their offspring.

When the allele combination is a dominate and a recessive trait together which trait will be seen?

• Dominate
• Recessive
• none
• both

Homozygous is when...

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

B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 

• 0%
• 25%
• 50%
• 75%

Aa is

• homozygous (purebred)
• heterozygous (hybrid)

What is a phenotype?

• The expression of a trait; physical appearance.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

Homozygous or heterozygous?
BB

• Homozygous
• Heterozygous