In the quest to understand the basis of infertility in humans, researchers have identified a mutation in a gene associated with chiasmata. this protein normally acts to promote homologous recombination. why might a defect in homologous recombination have consequences for fertility?

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water. b. they use chlorophyll and oxygen to make carbon dioxide and water. c. they use sunlight, water, and carbon dioxide to make sugars. d. they use sunlight, water, and oxygen to make chlorophyll.