Biology 182 Asu Exam 1| 268 Questions | With Complete Solutions

What did Darwin consider to be the "struggle for existence"? {Ans: Populations will reproduce at rates which exceed available resources.}True or False. Genetic variation depends on particles that segregate but do not blend during reproduction? {Ans: True}None of the black cats in the F1 generation could have the mutant allele, because they lack white fur. {Ans: False - (the allele could be recessive, which would lead to black fur in heterozygotes)}Think about the E. Coli example in regards to how mutation is random and spontaneous {Ans: The E. Coli in poor environment goes from a really efficient proof reading DNA Polymerase to having a less effective DNA Polymerase which would allow for a higher chance of Point Mutation. E. Coli has five genes for DNA Polymerase and can switch between them. Mutation is determined by Natural Selection.}A process in which a diploid cell produces 4 haploid cells {Ans: Meiosis}when two chromosomes contain the same genes {Ans: homologous}