Genetics Basics

Front

What is the study of heredity and variation in organisms?

Back

Genetics

Front

What are genetic instructions received from parents and passed onto offspring?

Back

Heredity

Front

What is a location on the chromosome that carries the code necessary to produce a trait in the offspring?

Back

A gene

Front

What is each member of a gene pair that determines a specific trait?

Back

An allele, for example, eye color – brown or blue.

Front

What is a physical characteristic as a result of the genes?

Back

A phenotype

Front

What is an organism that has two different genes for a trait?

Back

Heterozygous, for example, has brown eyes but may have one brown and one blue eye gene.

Front

What is a gene that overpowers or masks a recessive gene?

Back

A dominant gene, expressed with a capital letter, and is expressed if only one gene is present.

Front

What is a gene that is masked due to a dominant gene?

Back

A recessive gene, symbolized with a lowercase letter, and is only expressed if both genes are recessive.

Front

What are the actual genes that an organism has?

Back

Genotype

Front

What is the appearance of the traits, where the recessive gene is masked by a dominant gene?

Back

Phenotype