In some species of birds, males with the brightest plumage have the fewest parasites
Indicate whether the statement is true or false
TRUE
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The probability of a couple having either a boy or a girl is ½. However, many families have more boys than girls and VICE VERSA. Why is the observed ratio of boys to girls in typical families different than the predicted ratio?
A. There is a large random sampling error due to the small size of families. B. There is a small random sampling error due to the small size of families. C. Humans are more heterozygous than is predicted by random sampling. D. The sex of each child is determined independently. E. Two of the answers are correct. There is a large random sampling error due to the small size of human families and the sex of each child is determined independently.
Which statement about euglenoids is FALSE?
a. They have a pellicle. b. They are unicellular. c. They are all photosynthetic. d. Their cells contain mitochondria. e. They have 9 + 2 arrangement of microtubules in their flagella.
A frog that lacks chemical defenses, yet resembles a poison arrow frog, would exhibit:a
Batesian mimicry. b. mutualism. c. camouflage. d. Müllerian mimicry. e. epistasis.
Which of the following describes a red pigment?
a. It can reflect the green wavelength. b. It cannot reflect the red wavelength. c. It cannot reflect the green wavelength. d. It can reflect the red wavelength.