Genetics

Front

What is a recessive allele?

Back

An allele whose trait only shows up when no dominant allele is present.

Front

What percentage of offspring in a Punnett square are hybrids if the parents are Bb x Bb?

Back

50% of the offspring are hybrids.

Front

What is heredity?

Back

The passing of genetic traits from parent to offspring.

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, such as blue eyes.

Front

If two brown-eyed parents (Bb) have a baby, what is the chance the baby is blue-eyed?

Back

25% chance the baby is blue-eyed.

Front

What is a dominant allele?

Back

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

Front

Define genotype.

Back

The genetic makeup of an organism, represented by alleles (e.g., BB, Bb, bb).

Front

What is a Punnett square used for?

Back

A tool used to predict the genetic outcomes of a cross between two organisms.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait (e.g., BB or bb), while heterozygous means having two different alleles (e.g., Bb).

Front

What is a trait?

Back

A characteristic or feature of an organism, which can be influenced by genetics.