Unit 4 Genetics Review

Front

What is the male sex cell called?

Back

Sperm

Front

How many chromosomes do humans have?

Back

46

Front

What is a chromatid?

Back

A chromatid is one half of a duplicated chromosome.

Front

What percentage of the offspring will be heterozygous dominant in a typical Mendelian cross?

Back

50%

Front

What is the correct complementary base pairing for DNA?

Back

A pairs with T, and G pairs with C.

Front

What is a zygote?

Back

A zygote is the fertilized egg formed by the union of a sperm and an egg.

Front

Define genotype.

Back

Genotype refers to the genetic makeup of an organism.

Front

Define phenotype.

Back

Phenotype refers to the observable traits of an organism.

Front

What is the function of the centromere?

Back

The centromere is the region of a chromosome where the two sister chromatids are joined.

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.