A fungal infection damages all peristomes, preventing them from performing their function. Which process will be directly hindered as a result?
A) growth of the sporophyte
B) ability of sperm to locate eggs
C) growth of the protonema
D) lengthening of rhizoids
E) broadcast of spores
Ans: E) broadcast of spores
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LUCA is
A) the last universal common ancestor. B) the individual ancestor of each of the three domains. C) actually somewhat of a misnomer because it is now believed that each of the domains arose independently. D) All of the answers are correct.
Meerkats are small desert mammals that live in groups of 20–50 animals. You observe a female meerkat who spends all of her time caring for the 1-year-old offspring of her sister (her nieces and nephews)
The aunt is capable of reproduction but has not reproduced. Which of the following would contribute to the evolution of this behavior pattern? A. The odds of any one female reproducing are completely random. B. Offspring require the efforts of a single adult (the mother) in order to be successful. C. Offspring require the efforts of at least two adults in order to be successful. D. Offspring are independent at the age of three months, with no adult care after that point.
ABO blood type demonstrates which of the following inheritance patterns? (Select all that apply.)
A) complete dominance B) incomplete dominance C) codominance D) pleiotropy E) three genes are involved
What method of birth control is the most effective?
a. Condom b. Diaphragm c. Spermicides d. Withdrawal e. Vasectomy