Chapter 12 Quiz: Mendel, Genes, and Inheritance

Which of the following are true of alleles? Select all that apply.

Alleles exist on homologous chromosomes.

Alleles occupy corresponding loci on homologous chromosomes.

Alleles are different forms of a gene.

Alleles exist on homologous chromosomes.

Alleles occupy corresponding loci on homologous chromosomes.

Alleles are different forms of a gene.

Which of the following is the name for Mendel's principle that states that during meiosis the alleles for each locus separate into gametes?

Principle of segregation

Principle of independent assortment

Principle of recombination

Principle of segregation

Which of the following is the term for a cross between an individual of unknown genotype and a recessive individual?

Dihybrid cross

Monohybrid cross

Test cross

Test cross

Which of the following is the genotype of the first generation of offspring from a dihybrid cross?

Homozygous

Heterozygous

Unknown

Heterozygous

Which of the following is NOT true regarding a pedigree analysis?

A pedigree analysis is a family tree analysis of matings that will likely occur in the future.

A pedigree analysis utilizes patterns of Mendelian inheritance.

A pedigree analysis is a family tree analysis of matings that have occurred in the past.

A pedigree analysis is a family tree analysis of matings that will likely occur in the future.

Which genetic cross would give a phenotypic ratio of 9:3:3:1?

PPSS x PpSs

PpSs x PpSs

PPSS x ppss

PpSs x PpSs

The calico pattern seen in some cats is a result of which patter of inheritance?

Incomplete dominance

Linkage

Co dominance

X-Inactivation

X-Inactivation

All patterns of inheritance can be explained by Mendelian genetics.

False

In mammals the _____ chromosome determines male sex and the ________ chromosome carries traits that are required by both females and males.

Y

X

When multiple alleles exist in a population for a single locus, how many of these alleles does a diploid individual have?

Two