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Which action is unable to produce variation?

Which of the following occur in telophase I of meiosis?

In sexual reproducers, meiosis gives rise to _____________.

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

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?

Which characteristic is correlated with cancer cells and metastasis?

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 purple flowers produces 3/4 tall purple and 1/4 tall white. What is the genotype of the parents?

Which phase(s) of meiosis occur in a similar manner to mitosis?

In radishes, long or round are homozygous forms of an incompletely dominant gene, and oval is the phenotype of the heterozygote. If a long radish is crossed with a round radish, which of the following phenotypic ratios of the F2 generation is correct?

In humans, environmental factors causing stress can impact