Heredity and Natural Selection DCA Review

Front

What do half colored symbols represent in a pedigree chart?

Back

The individual is a carrier (heterozygous).

Front

If a pedigree shows an autosomal recessive disorder, what MUST the genotype of an affected individual be?

Back

hh

Front

How many individuals in a pedigree with a specific trait are affected if there are 4 individuals with the trait?

Back

4

Front

In a pedigree showing blue eyes as a recessive trait, what is the genotype of a father (square) in generation 1 if he has a blue-eyed child?

Back

Aa

Front

What are changes in genetic material called?

Back

Mutations

Front

What is the definition of heredity?

Back

The passing of traits from parents to offspring.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is a genotype?

Back

The genetic constitution of an individual, represented by alleles.

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.