Heredity Unit Review

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing

In a pedigree, which shape represents a male?

• circle

• square

On a pedigree, this symbol represents a ---

• not affected female.

• not affected male.

• affected male.

• affected female.

On a pedigree, this symbol represents a ----

• not affected male.

• not affected female.

• affected male.

• affected female.

How many individuals are there in the 3rd generation?

• 1

• 2

• 4

• 6

If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?

• HH
• Hh
• hh
• None of the above

There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?

• Dominant
• Recessive

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

What ratio of the offspring from the cross shown will be homozygous recessive for the  trait of tallness? 

• 0 in 4
• 1 in 4
• 2 in 4
• 4 in 4

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa