Summer School Biology - CH 7 - Section III and IV Quiz

The fact that the body color and wing shape of he fruit fly do not sort independently _____________.

• Is evidence of linked genes

• makes Punnett squares useless

• disproves the theory of linked genes

• is the only exception to Mendelian genetics

What is the name for genes found only on the X chromosome?

• Mutant phenotypes

• Sex-Linked Genes

• Male-Linked Genes

• Mutations

Which process involves the shuffling of genes into new combinations by crossing over?

• Genetic Recombination

• Gene Linking

• Chromosome Shift

• Gene Mapping

White eye color in the Drosophila fruit fly is a ______.

• nondisjunction

• sex-influenced trait

• sex-linked trait

• mutation

Sex-limited traits are autosomal traits that are expressed ______.

• in either sex

• only in one sex

• only in embryos

• only on sex chromosomes

Recombination occurs more frequently between genes that are _____________.

• close together on a chromosome

• genetically incompatible

• far apart on a chromosome

• genetically compatible

Chromosomes that are not sex chromosomes are called what?

• Y chromosomes

• gene pairs

• X chromosomes

• Autosomes

Fruit flies are ideal for genetic studies because they ________.

• rarely reporduce

• are all one sex

• live for a long time

• produce large numbers of offspring

Because X and Y chromosomes are non homologous, most of the genes on the X chromosome ___________.

• do not match the genes on the Y chromosome

• are homozygous

• match the genes on the Y chromosome

• are not expressed

A sperm carrying a Y chromosome can produce what?

• A male only

• Male or female

• A female only

• An autosome