Genetics Basics

Front

What is a monohybrid Punnett square used for?

Back

To demonstrate the heritability of genes and the resulting genetic variation.

Front

What does heterozygous mean?

Back

An organism with two different alleles for a specific trait.

Front

What does homozygous mean?

Back

An organism with two identical alleles for a specific trait.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable characteristics.

Front

What is a dominant allele?

Back

An allele that expresses its phenotype even when heterozygous with a recessive allele.

Front

What is a recessive allele?

Back

An allele that only expresses its phenotype when homozygous.

Front

What is codominance?

Back

A situation in which both alleles in a heterozygous organism contribute to the phenotype.