Heredity Flashcard Study Guide

Front

What is a mutation?

Back

A mutation is a change in a DNA sequence.

Front

What is a trait?

Back

A characteristic that an organism can pass on to its offspring through its genes.

Front

What is a recessive allele?

Back

A form of a gene that is expressed only when a dominant allele is not present.

Front

What is the probability of producing heterozygous offspring from a monohybrid cross?

Back

50%.

Front

Why might an offspring resemble its father more than its mother?

Back

Because the father has more dominant traits.

Front

What is a dominant allele?

Back

An allele that expresses its trait even when only one copy is present.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.

Front

What is the role of genes in heredity?

Back

Genes are units of heredity that carry information from parents to offspring.