Haploid sex cell; e.g., egg or sperm.
What will be an ideal response?
gamete
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The size of the mouse (M. musculus) genome is 2700 megabases (Mb) and it contains about 25,000 genes arranged on 40 chromosomes. If the genes are evenly distributed on chromosomes in the mouse, what is the average number of genes per chromosome?
A) 1 B) 9.3 C) 67.5 D) 625
What was the basic problem with the Miller-
Urey early atmosphere experiments?
a. there was no lightning on the early Earth b. there was no hydrogen gas in Earth’s early atmosphere c. they used oxygen gas which was not present in Earth’s early atmosphere d. the mixture of gases they used was not representative of Earth’s early atmosphere e. more than one of these is correct
A penguin's feet are nearly as cold as ice, while the bird's core body temperature is much higher. Which of the following explains this observation?
A. countercurrent heat exchange between warm blood in arteries and cold blood in veins B. countercurrent heat exchange between warm blood in veins and cold blood in arteries C. blood supply to legs shut off by vasoconstriction D. no muscles in the feet of penguins to generate heat E. heat cannot diffuse from body core to feet because feet are too far away
Many poisonous snakes share warning colors of red, yellow, and black. This is an example of:
a. Batesian mimicry. b. mutualism. c. camouflage. d. Müllerian mimicry. e. character displacement.