The word meristem is derived from a Greek word meaning to divide.
Answer the following statement true (T) or false (F)
True
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The product(s) of meiosis I in oogenesis is/are
A. a secondary oocyte. B. a primary oocyte. C. a secondary oocyte and a polar body. D. a primary oocyte and a polar body. E. a polar body.
Refer to Figure 26-3. The structure at point 6 in the life cycle:
a. is a zoospore.
b. was produced by mitosis.
c. was produced by meiosis.
d. is diploid.
e. is a structure in which mitosis occurs.
According to one study, the heritability of IQ score in humans has a value of 0.52. What does this tell us about the role of "nature" versus "nurture" in determining intelligence in humans?
A) Intelligence is a qualitative trait, affected by both genetics and the environment, and it can't be predicted by heritability scores. B) Children of highly intelligent parents will likely be very intelligent, regardless of the environment in which they're raised. C) There is an approximately equal chance that children of intelligent parents will be as intelligent as their parents, depending on the environment in which they're raised. D) High heritability values don't mean that the intelligence of children can be accurately predicted because the environment plays a strong role.
A change in genotype, but not in phenotype, is most likely due to ________.
A. a point mutation in the third position of a DNA triplet B. a nonsense mutation at the beginning of a gene C. thymine dimer formation in the coding region of a gene D. a mutation that leads to a frameshift in the middle of a gene