Tomatoes carry a gene called fw2.2 that encodes a protein made during early fruit development―the job of which is to repress cell division.Additionally,researchers have identified a second gene called fas that controls the number of compartments in the mature fruit.Artificial selection leading to the production of very large tomatoes has apparently capitalized on ________.
A) alleles associated with low production of the repressor protein and an increase in the number of fruit compartments B) alleles associated with high production of the repressor protein and an increase in the number of fruit compartments C) alleles associated with low production of the repressor protein and a decrease in the number of fruit compartments D) alleles associated with high production of the repressor protein and a decrease in the number of fruit compartments
Darwin confirmed the concept of evolution under domestication himself by experimenting with pigeons.This mechanism is more commonly known as ________.[two words]
Darwin developed his theory of natural selection despite having an incomplete and/or inaccurate knowledge base from which to work.Which of the following were problems for Darwin?
A) the source of variations in populations B) an understanding of inheritance patterns from one generation to the next C) The accepted age of the Earth was far too young to allow for the gradual changes Darwin envisioned. D) All of the above.