A male has a genetic disease coded for on his Y chromosome. This disease has been seen in his family in past generations. Which parent passed on this trait?
A) either the mom or dad B) the mom
C) neither parent — it is a spontaneous mutation D) the dad
Answer: D
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Efforts to define the last universal common ancestor (LUCA) currently estimate 80–500 genes are shared by all known species. The lower value of 80 was estimated by determining the number of:
A. mRNAs species produced in LUCA. B. genes coded by LUCA genome. C. genes in simplest bacterial species. D. clearly identifiable orthologs in all organisms. E. genes required for processes that are found in all organisms.
You observe a sunflower that moves its leaves so that it tracks the sun across the sky through the day, and a sensitive
plant that reversibly folds up its leaflets when you touch it. These are both examples of ____.
a. phototropism b. thigmotropism c. stress responses d. circadian rhythms e. nastic movements
In the section "Investigating Life: Birds Do, Bees Do It", in the wild-type purple monkeyflower (M. lewisii), the dominant YUP allele prevents carotenoids from forming, leaving the pinkish-purple anthocyanin pigments to provide the petal color. A wild-type scarlet monkeyflower (M. cardinalis) has which genotype?
A. yup/yup B. YUP/YUP C. YUP/yup D. YUP E. yup
Bacterial infections that reach the kidneys can result in which serious complication?
A) malignancies of the kidney B) bacteremia as bacteria use the renal blood vessels to enter wider circulation C) bacteremia, impaired renal function, and malignancies D) impaired renal function due to scar tissue E) bacteremia and impaired renal function