Genetics and Dichotomous Key

A version of a gene is called a(n)

• allele

• characteristic

• specific gene

• trait

A trait that is expressed if one copy of the allele is present is a(n)

• characteristic

• dominant trait

• gene

• recessive trait

An organism’s genetic makeup; the pair of alleles for a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

An organism’s physical expression of a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

What is it called when both alleles in a genotype are the same?

• Dominance

• Heterozygous

• Homozygous

• Recessiveness

What is it called when the alleles in a genotype are different?

• Dominance

• Heterozygous

• Homozygous

• Recessiveness

Which pair of alleles is an example of homozygous recessive?

• bb

• BB

• Bb

Which pair of alleles is an example of homozygous dominant?

• tt

• TT

• Tt

Tags

7.11(A), 7.11(B), 7.11(C)

Which pair of alleles is an example of heterozygous alleles?

• ll

• LL

• Ll

What are physical characteristics of an organism?

• Alleles

• Genotypes

• Genes

• Traits