Genetics and Inheritance Quiz

What is an allele?

• A type of plant

• A type of animal

• A type of rock

• An alternative form of the same gene

What does homozygous mean?

• When there are multiple alleles present

• When there are no alleles present

• When two alleles are different for one trait

• When two alleles are the same for one trait

What is the phenotype of an organism?

• The physical appearance

• The genetic makeup

• The internal structure

• The behavior

What does the law of segregation state?

• Chromosomes combine during meiosis

• Chromosomes disappear during meiosis

• Chromosomes do not separate during meiosis

• During meiosis, chromosomes separate leaving each cell with a single allele for each trait

What is the law of independent assortment?

• One allele does not influence another allele on a different gene

• One allele always influences another allele on a different gene

• Alleles are always the same on different genes

• Alleles are always different on different genes

What is the genotype of an organism?

• The internal structure

• The genetic makeup

• The behavior

• The physical appearance

What is a dominant trait?

• The trait that is always hidden

• The trait that is always visible

• The weaker trait that never shows up

• The stronger trait that always overshadows the recessive trait

What is a recessive trait?

• The stronger trait that always shows up

• The trait that is always hidden

• The trait that is always visible

• The weaker trait that will only come through if there are two of them

An organism's complete set of genes is called its...

• Genome

• DNA

• Chromosome

• Chromatin

A pea plant that has 2 different alleles for a trait means they are

• homozygous

• heterozygous

• purebred