29. Heredity

An allele that is able to mask the expression of its partner allele is said to be __________.

Codominant alleles are present in __________.

An organism with five pairs of homologous chromosomes could produce __________ different gametes on the basis of independent assortment alone.

The larger the number of offspring, the greater the likelihood that the observed ratios will conform to the values predicted by the Punnett square.

Many genetic disorders, such as albinism, cystic fibrosis, and Tay-Sachs disease, are inherited as simple recessive traits.

The X and Y sex chromosomes are the best examples of homologous chromosomes.

How many chromosomes are in a normal haploid human cell?

In dominant-recessive inheritance, if an individual is heterozygous, which phenotype will be expressed?

The form of inheritance in which the heterozygous state is expressed as an intermediate is __________.

A person who inherits the A and the O blood type alleles will possess which blood type?

What is the probability that a child will be born with a recessive trait if both parents are heterozygous for the trait?

In the human blood type AB, both alleles are expressed and are therefore __________.