Heredity Review

The form of a gene that is always expressed if present is the ___________________ form

• dominant

• recessive

• allele

• codominance

What law BEST explains why an organism with Tt will show only the dominant phenotype?

• Law of Dominance

• Law of Independent Assortment

• Law of Segregation

• Law of Filial Generations

If an organism inherits one dominant allele and one recessive allele, their genotype would be

• homozygous dominant

• homozygous recessive

• homologous

• heterozygous

Which law states that organisms inherit two copies of each gene and donate one copy to their offspring?

• law of dominance

• law of segregation

• law of independent assortment

• law of genetic linkage

Select all of the following genotypes that are heterozygous.

• Tt

• tt

• RR

• Rr

Select all of the following genotypes that are homozygous.

• GG

• Gg

• hh

• Hh

For a female (XX) to have a recessive sex-linked trait, she must have

• a Y chromosome

• one recessive allele

• two recessive alleles

• two dominant alleles

Human height occurs in a continuous range because it is affected by the interaction of many genes, making it

• an autosomal trait

• a sex-linked trait

• a codominant trait

• a polygenic trait

Tags

NGSS.HS-LS4-3

Red hair and freckles are typically inherited together. What type of inheritance is this?

• sex-linked

• multiple alleles

• linked genes

• codominance

Mutations can be caused by all of the following EXCEPT

• radiation

• global warming

• chemicals

• viruses

Tags

NGSS.HS-LS3-2