AP Biology Unit 5 Review

Front

What is the significance of Thomas Hunt Morgan's work in genetics?

Back

Provided evidence for the chromosomal basis of sex-linkage.

Front

What process involves homologous chromatids exchanging genetic material to increase genetic diversity?

Back

Crossing over.

Front

What forms a Barr body in a cell?

Back

One of the X chromosomes in a female cell.

Front

What is the genotype of a snowman that is homozygous recessive for button number and heterozygous for nose type?

Back

bbNn.

Front

What is a gene loci?

Back

Specific positions of genes on a chromosome.

Front

What is the role of meiosis in sexual reproduction?

Back

Meiosis reduces the chromosome number by half and produces gametes.

Front

Define homologous chromosomes.

Back

Chromosomes that are similar in shape, size, and genetic content, one inherited from each parent.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the observable traits.

Front

Explain the concept of independent assortment.

Back

The random distribution of alleles during gamete formation.

Front

What is a dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.