Genetics Test25

Front

What is the figure below called? It is a picture of the chromosomes of an organism.

Back

Karyotype

Front

What is the figure below called? It is a chart that illustrates the passing of a trait in a family through the generations.

Back

Pedigree

Front

Organisms that have two identical alleles for a particular trait are said to be

Back

homozygous.

Front

Cross a yellow pod plant with a green heterozygous pod plant. What is the percentage of having the green pod plant?

Back

50%

Front

What is the genotypic ratio of this Punnett square? A=Axial flower position and a=Terminal flower position

Back

25%aa:50%Aa:25%AA

Front

Situations in which one allele for a gene is not completely dominant over another allele for that gene (blending) is called

Back

incomplete dominance.

Front

What is the phenotypic ratio of this Punnett square? A=Axial flower position and a=Terminal flower position

Back

75% Axial flower position: 25% Terminal flower position

Front

A situation in which both alleles contribute to the phenotype of an organism (both alleles are dominant and are expressed).

Back

codominance

Front

A situation in which a trait is produced by the interaction of several genes (e.g., skin color).

Back

polygenic traits

Front

What is it called when genes have more than two alleles? (example blood type A, B, and O)

Back

multiple alleles