Genetics and Inheritance Patterns

Front

What does Mendel's law of segregation state?

Back

Organisms inherit two alleles for each gene, and parents donate one allele for each gene to offspring.

Front

What is a heterozygous genotype?

Back

A genotype with two different alleles for a gene, such as Rr.

Front

What is the expected phenotypic ratio of offspring from a cross between two heterozygous guinea pigs?

Back

3 black fur: 1 white fur.

Front

What is the definition of dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What is the definition of recessive allele?

Back

An allele that expresses its trait only when two copies are present.

Front

What is a pedigree chart used for?

Back

To track the inheritance of traits through generations in a family.

Front

What is the expected offspring ratio from a cross of Roan (RW) x Roan (RW)?

Back

1 red: 2 roan: 1 white.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene, such as RR or rr.

Front

What is the expected ratio of wrinkled and green offspring in a genetic cross?

Back

1/16.

Front

What is the definition of genotype?

Back

The genetic makeup of an organism, represented by alleles.