If a person has a stroke and their speech becomes impaired, which region of the brain will likely to be affected?
A. parietal lobe
B. frontal lobe
C. occipital lobe
D. temporal lobe
E. brainstem
B. frontal lobe
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In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.1. What is the percentage of the population that is heterozygous for this allele?
A) 90 B) 81 C) 49 D) 18 E) 10
In an analysis of independent contrast, researchers found that fetuses had faster growth rates in polyandrous than in monogamous species of primates. How did the researchers interpret the results?
a. Fetuses develop faster to "make room" for offspring from a different male. b. Extracting more resources from the mother maximizes offspring's inclusive fitness in polyan-drous species. c. Fast fetal growth rates are always optimal. d. Fetal growth rates represent phylogenetic constraints and are unrelated to mating system.
What is the basis of Mendel's laws?
A) the behavior of chromosomes during prophase I of meiosis only B) the behavior of chromosomes during mitotic anaphase C) the behavior of chromosomes during prophase I and prophase II of meiosis D) the behavior of chromosomes during metaphase I and anaphase I of meiosis
Figure 24.6
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Refer to the illustration above of an adult sponge for questions 10 and 11.
In the accompanying figure, a cell type that helps to pull water through the sponge and strains out food particles is identified by the number ____.
A. 1 B. 2 C. 3 D. 4 E. 5