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?

Genetic diversity arises as a consequence of ________, which produce(s) different alleles of a gene.

Which of the following is typical of cancer cells?

Which eye color has dense melanin deposits in the iris?

The essence of meiosis is that __________________________________.

During ____, microtubules fasten the cell’s chromosomes to the spindle poles.

Which genetic situation could most likely have confounded Mendel in his recognition of independent assortment?

In sexual reproducers, meiosis gives rise to _____________.

White fruit color in summer squash is influenced by a dominant allele W, whereas colored fruit must be ww. In the presence of ww, a dominant gene G results in yellow fruit, and homozygous gg results in green fruit. The F2 phenotypic ratios resulting from a cross of a true-breeding plant with white fruit (genotype WW GG) with a plant with green fruit will result in which phenotypic ratios?

Dolly’s lifespan might have been extended by giving her supplementary ___.