Exam 13: Observing Patterns in Inherited Traits

A(n) __________ is a hybrid, with two nonidentical alleles (Aa).

Assume that red plants crossed with white plants give rise to pink plants. Explain how to eliminate red plants if you start with two pinks.

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a dwarf plant with white flowers produces 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white. What is the genotype of the parents?

Matching Answer the following questions using the group of answers below. -Plant species X is diploid (2n = 24) and has a quantitative trait, the expression of which is controlled by gene loci on each of its chromosomes. What is the maximum number of alleles for this trait that any one individual of species X could have?

In ____, a pair of nonidentical alleles affecting the phenotypes of a given trait are both expressed at the same time in heterozygotes.

If black fur color is controlled by a dominant allele (B) and brown by its recessive allele (b), give the genotypes of the parents and offspring of a cross of a black male with a brown female that produces 1/2 black offspring and 1/2 brown offspring.

In horses, there are four alleles at the A locus. Arranged in dominance sequence they are: A (wild), ab (bay), ac (brown), ad (black) ​.If you bred several bay mares whose sires were brown to a brown stallion whose sire was black, what are the genotypes of the parents; what type of offspring would be produced; and in what proportion?

Which of the following is true about Marfan syndrome?

Various forms that a single gene can take at a given locus are called

Height, weight, and eye color are examples of phenotypes that illustrate

A bell-shaped curve of phenotypic variation is indicative of

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents?

Crosses between a yellow rat with a yellow rat always produce yellow offspring. Crosses between a white rat with a white rat always produce white offspring. The alleles affect the same aspect of coat color. The cross of a white rat with a yellow rat produces a cream rat. If you cross two cream rats, what will be the ratios of phenotypes of the offspring?

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a dwarf plant with white flowers produces 1/2 tall with purple flowers and 1/2 tall with white flowers. What is the genotype of the parents?

Classically, nature and nurture have been considered as two very separate factors impacting phenotype. Considering what we have learned of methylation, is this always the case?

If you were following the inheritance patterns of two different sets ofe multiple alleles located on different chromosomes, how many different possible gametes could be produced if locus 1 had five possible alleles and locus 2 had six alleles?

Which statement is TRUE about Marfan syndrome?

Which most completely describes the circumstances under which yarrow will alter its phenotype?

__________ assorts gene pairs of homologous chromosomes independently of gene pairs on all other chromosomes.

Figure 13.8 -Which offspring in the illustration above are homozygous recessive for both traits?