The human genome contains 46 chromosomes. There are 22 pairs of ________ (type of chromosome) and one pair of ________ (type of chromosome)
Fill in the blank(s) with correct word
autosomes; sex chromosomes
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Research by Malte Andersson suggests the long tail feathers of male African widowbirds are a product of ____
selection because females are more strongly attracted to males with long tails than to males with short tails.
a. disruptive b. intersexual c. intrasexual d. artificial e. stabilizing
Based on its outer shell, the atom in the accompanying figure would be characterized as ____
a. very stable b. somewhat stable c. somewhat unstable d. very unstable e. radioactive
Why are red algae found in deeper oceanic waters?
A. They are able to utilize the more saline deep water. B. Red algae prefer the warmer deep water. C. Fewer algae predators are found in deeper water. D. They possess pigments that allow them utilize blue-green-light. E. They possess pigments that allow them to utilize red light.
If an F2 generation from a self-cross always yields offspring in a 3:1 phenotypic ratio, which of the following P crosses could have occurred?
A) aa × Aa B) AA × AA C) AA × aa D) aa × aa E) Aa × AA