Mendel was the first to propose that allele pairs segregate from each other when gametes are formed, which is known as Mendel's law of segregation. We now know that segregation of alleles is a result of the behavior of chromosomes during meiosis. Segregation of alleles in meiosis will happen when which of the following occurs?
A) Homologous chromosomes separate during meiosis I.
B) Homologous chromosomes separate during meiosis II.
C) Sister chromatids separate from each other during meiosis I.
D) Homologous chromosomes undergo crossing over.
Ans: A) Homologous chromosomes separate during meiosis I.
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Examine the figure above. In 2010, what set of age groups made up the largest proportion of the population of France?
A. 0-14
B. 15-34
C. 35-64
D. 65-100+
Most carbohydrates manufactured in leaves and other photosynthetic parts are transported through the phloem to the rest of the plant by the process of
A. translocation. B. transpiration. C. turgor pressure. D. osmosis. E. receptor-mediated transport.
Photosynthetic organisms serve as the base for most food chains in the biosphere.
Answer the following statement true (T) or false (F)
All rain forests are tropical.
Answer the following statement true (T) or false (F)