Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses (e.g., BB, Bb, bb).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a specific gene (e.g., Bb).

Front

What is the genotype of a person with type B blood who has a child with type O blood?

Back

The woman's genotype must be BO.

Front

What does it indicate if a trait skips a generation?

Back

If a trait skips a generation, it is an indication that the trait is recessive.

Front

What is a phenotype?

Back

A phenotype is an organism's physical appearance or visible traits.

Front

What is the phenotype of a mother in generation 1 of a pedigree if blue eyes are recessive?

Back

The phenotype of the mother is Blue.

Front

What is a dominant trait?

Back

A dominant trait is one that is expressed in the phenotype even if only one allele is present (e.g., BB or Bb).

Front

What is a recessive trait?

Back

A recessive trait is one that is expressed in the phenotype only when two copies of the allele are present (e.g., bb).

Front

What is co-dominance?

Back

Co-dominance occurs when both alleles in a heterozygous genotype are fully expressed, resulting in a phenotype that shows both traits (e.g., AB blood type).

Front

What is incomplete dominance?

Back

Incomplete dominance is when the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes (e.g., red and white flowers producing pink flowers).