Mendelian Genetics

Front

What is the genotype of an individual with two identical alleles for a trait?

Back

Homozygous

Front

What is the genotype of an individual with two different alleles for a trait?

Back

Heterozygous

Front

What is the physical expression of a trait called?

Back

Phenotype

Front

What is the genetic makeup of an individual called?

Back

Genotype

Front

What is the term for different forms of a gene?

Back

Alleles

Front

If a trait is dominant, what does that mean?

Back

It will be expressed in the phenotype even if only one dominant allele is present.

Front

What is a Punnett square used for?

Back

To predict the genotypes and phenotypes of offspring from parental crosses.

Front

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents?

Back

3:1

Front

What is the expected genotypic ratio of a monohybrid cross between two heterozygous parents?

Back

1:2:1

Front

What does it mean if an organism is homozygous recessive?

Back

It has two recessive alleles for a trait.