Exam 9: Patterns of Inheritance

Two humans mate who are heterozygous for earlobe shape where attached earlobes (A)are dominant to free earlobes (a),and earwax quality where dry earwax (e)is recessive to wet earwax (E ).What is the probability that their first child will have dry earwax and attached earlobes?

Inheritance of ABO blood type in humans is an example of

The plant shown in the following image would be considered a hybrid.

Is it possible for two organisms with the same genotype to have different phenotypes?

The best way to get accurate results from a probability exercise is to

If the influence of two alleles is fully displayed in the heterozygote without being diminished by the presence of the other allele or being suppressed by a dominant allele,the two alleles are said to be ________.

The following figure shows three generations in one of Mendel's experiments and demonstrates that purple flower color is dominant over white flower color in peas.Which of the following is the best rationale for this conclusion?

If the D allele is completely dominant over the d allele,what percentage of the offspring will have the dominant phenotype when two heterozygous individuals mate?

The individuals Mendel observed in the F₁ generations were always

A Punnett square is used to

Experiments involving small numbers of offspring give more reliable results than experiments observing large numbers of offspring.

A mutation that occurs in a diploid cell can be inherited only if the

Temperature can affect phenotype.

By observing the offspring in a series of pea-breeding experiments,Gregor Mendel deduced the laws of ________.

Two parents have ABO blood group genotypes of I^Ai and I^AI^B.Which of the following blood types could NOT belong to one of their children?

A thoroughbred racehorse could have,at most,________ alleles of the same gene.

Which of the following pairs of words can be used correctly to describe alleles?

The first reaction in the chain of enzyme-catalyzed chemical reactions that convert the amino acid tyrosine into eumelanin or pheomelanin is orchestrated by an enzyme encoded by the C gene.This enzyme is called ________.

What is the smallest number of traits that are needed to test Mendel's law of independent assortment?

Environmental factors can alter the effects of genes.