Epigenetic effects can sometimes even be passed from generation to generation. In what way would this kind of "inheritance" be an exception to Mendel's laws?
A. These effects must be caused by mutations.
B. According to Mendel's laws, the effects of our environment are not passed on to the next generation.
C. Mendel's laws apply only to pea plants, not all sexually reproducing organisms.
D. Since they are scientific laws, Mendel's laws can't be violated even if there is new evidence to the contrary.
B. According to Mendel's laws, the effects of our environment are not passed on to the next generation.
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Water is the least dense when it ________.
A. is frozen B. is just below boiling C. is at room temperature D. is just above freezing
Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb. In this respect, chlorophyll b acts as
A. an accessory pigment. B. an energizer for photosynthetic bacteria. C. a light absorber in the green light. D. a more efficient pigment.
Which of the following statements explains why all of the F1 females from a cross between a red-eyed homozygous female and a white-eyed male are heterozygous?
A. The male parent provides them with a white-eye allele on the X and a red-eye allele on the Y. B. The male parent provides them with a white-eye allele on the X, and the female parent provides them with a red-eye allele on the Y. C. The male parent provides them with a white-eye allele on the X, and the female parent provides them with a red-eye allele on the X. D. The female parent provides two X chromosomes to each daughter who both carry the red-eye allele. E. None of the answer options is correct.
A female cat in heat urinates more often and in many places. Male cats are attracted to the urine deposits. Which of the following is a proximate cause of this increased urination?
A) It announces to the males that she is in heat. B) Female cats that did this in the past attracted more males. C) It is a result of hormonal changes associated with her reproductive cycle. D) The female cat learned the behavior from observing other cats.