Sci 8 - Genetics Test Review

The physical way an organism looks (such as fluffy fur) is its:

• genotype

• phenotype

• allele

• heterozygous

The combination of two alleles that organisms have for each trait (such as BB or Bb) is their:

• genotype

• phenotype

• allele

• homozygous

When an organism has two of the same allele they are:

• homozygous

• heterozygous

• epistatic

• phenotype

When an organism has two different alleles for a trait they are:

• heterozygous

• homozygous

• genotypic

• polygenic

Which of these would represent a dominant trait?

• B

• b

Which of these would represent a recessive trait?

• B

• b

Which of these genotypes would show the recessive trait?

• BB

• Bb

• bb

• none of these!

Different forms of a trait that are represented by letters are known as:

• alleles

• phenotypes

• chromosomes

• genomes

Which of these is heterozygous?

• BB

• Bb

• bb

Which of these is homozygous dominant?

• BB

• Bb

• bb