Grade 7 Heredity Flashcard

Front

What is a homozygous genotype?

Back

A homozygous genotype has two identical alleles for a particular gene.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a particular gene.

Front

What is the role of DNA in inheritance?

Back

DNA carries the genetic information from parents to offspring.

Front

What are genes responsible for?

Back

Genes carry the instructions for making proteins.

Front

What does a Punnett square show?

Back

A Punnett square shows the possible genotypes of offspring from two parents.

Front

What can be concluded if all offspring have the same genotype?

Back

Both parents have the same genotype for that trait.

Front

What allele is expressed in a heterozygous genotype?

Back

The dominant allele is expressed in the phenotype.

Front

What is an allele?

Back

An allele is a variant form of a gene.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles are expressed in the phenotype, while recessive alleles are only expressed when two copies are present.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism.