Exam 10: Patterns of Inheritance

A case of more than one gene influencing one phenotypic characteristic is called

In pea plants, green pod color dominates yellow pod color. If a pea plant with yellow pods is crossed with a pea plant heterozygous for pod color, ____ of the offspring will have yellow pods.

If in houseflies the allele for green eyes is dominant over the allele for white eyes, and a heterozygous green-eyed male is mated with a white-eyed female, what is the probability that they will have green-eyed offspring?

The probability of parents with the genotypes (Ll) (ll) having an offspring with the genotype (ll) is

When two dice are thrown, both dice will show the number three

Whether a honeybee larva will become a worker or a queen is largely determined by its diet. This is an example of

The sex of the fruit fly Drosophila melanogaster is determined as follows: XX chromosomes give a female and XY give a male. The gene for bar eyes is recessive and located on the X chromosome. If two bar-eyed flies are mated, what percentage of the offspring will have bar eyes?

Humans have the diploid number of chromosomes, 2n = 46. This also indicates humans

Offspring with four phenotypes in a 1:1:1:1 ratio can be produced by

The typical human male has

A red-eyed female fruit fly is crossed with a red-eyed male fruit fly. All of the female offspring have red eyes but only one-half of the male offspring are red-eyed. The other half of the male offspring have white eyes. In this example, eye color in fruit flies

In fruit flies normal wings are dominant over vestigial wings. If a homozygous normal-winged fly and vestigial-winged fly were crossed, what would the phenotype of the fly offspring be?

The expression of a gene is called

In fruit flies the gene for vestigial wings will produce tiny underdeveloped wings at room temperature but will produce normal wings at higher temperatures. The vestigial condition in fruit flies is determined by

If the many offspring of a double-factor cross always have both recessive traits,

The possible combinations of alleles in the gametes of an individual with the genotype aaBb are

A heterozygous condition would be characterized by the possession of alleles for

Smooth fur dominates rough fur; black and white fur are incompletely dominant and result in gray. A rough gray crossed with a rough gray would produce

If the parents of a child have the following genotypes [Bb *Bb], what is the probability that they will have a child with the genotype [Bb]?

In humans, a gene for free earlobes dominates a gene for attached earlobes. These alternative forms of a gene for earlobe shape are examples of