Which observation(s) of the medium ground finch (Geospiza fortis) by Peter and Rosemary Grant verify Darwin's selection hypothesis? Check all that apply.
_____ Considerable variation existed in the beak size and shape of this finch.
_____ The medium ground finch showed assortative mating according to beak size and shape.
_____ Beak shape (depth) varied with the dryness of the year.
_____ Offspring were similar to parents in beak size and shape.
__X__ Considerable variation existed in the beak size and shape of this finch.
_____ The medium ground finch showed assortative mating according to beak size and shape.
__X__ Beak shape (depth) varied with the dryness of the year.
__X__ Offspring were similar to parents in beak size and shape.
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An ion is an atom that has
A. a net negative charge. B. a different number of neutrons from the number of protons. C. a net negative or positive charge, with the number of electrons different from the number of protons. D. the same number of electrons as it does protons. E. a net positive charge. Accessibility: Keyboard Navigation
The mating system in which males and females mate with one or many of the opposite sex and form no pair bond is known as
A) monogamy. B) polygyny. C) polyandry. D) promiscuity.
Synonymous mutations are found much more frequently than nonsynonymous mutations because
A) mutations do not occur randomly B) the genetic code is redundant. C) of genetic drift. D) there is a selective advantage in looking like another species. E) changes in the amino acid sequence of proteins are likely to be harmful.
Which of the following is a male part of the angiosperm flower?
A. Sepal B. Stigma C. Anther D. Corolla