Traits and Punnett Squares

Front

What is the term for two different alleles for a given trait?

Back

Heterozygous

Front

What percent of the offspring will be heterozygous if one parent is homozygous dominant and the other is homozygous recessive?

Back

50%

Front

If the genotype is 'Aa', what type of phenotype does the organism display?

Back

Dominant

Front

What is the term for two identical alleles for a given trait?

Back

Homozygous

Front

If the genotype is 'aa', what type of phenotype does the organism display?

Back

Recessive

Front

What is a Punnett Square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

What does the term 'allele' refer to?

Back

Different forms of a gene that can exist at a specific locus.

Front

What is the phenotype of an organism?

Back

The observable characteristics or traits of an organism.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present; recessive traits are expressed only when two recessive alleles are present.

Front

What does homozygous mean in genetics?

Back

Having two identical alleles for a particular gene.