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If organisms A, B, and C belong to the same class but to different orders and if organisms D, E, and F belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?

What is the difference between a prezygotic mechanism and a postzygotic mechanism?

The four-chambered hearts of birds and the four-chambered hearts of mammals evolved independently of each other. If one were unaware of this independence, then one might logically conclude that:

Who hypothesized evolution first, but was flawed in his thinking, because he did not understand phenotypic changes after birth?

Phylogenetic hypotheses (such as those represented by phylogenetic trees) are strongest when…

Which of the following is a rule of evolution?

If you have a dominant allele with a p value = 0.7, what would be the values for the following… Recessive allele (q)? [value1] Homozygous recessive individuals? [value2] Heterozygous individuals? [value3] Homozygous dominant individuals? [value4]

Use the figure to answer the following questions. The two extant species that are most closely related to each other are…