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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?

Spindle microtubules are at their longest during which stage of mitosis?

Dolly, the cloned sheep, had telomeres that ___________________.

Four of the following will stimulate the production of males in water fleas. Which one is the exception?

Cancer cells ____.

Some tumor-causing mutations increase the activity or number of molecules that stimulate cell division. Genes in which such mutations occur are called _______.

DNA doubles or the formation of a double helix (strand) occurs________________.

The variation in traits among and/or within families is due to?

Homologous chromosomes become attached to either ____ in prophase I.

The region of noncoding DNA at the end of a chromosome and proteins that bind to it, protecting the chromosome from end damage.