MBG 2400 Questions with Complete Correct Answers | Grade A+

What happens to a chromosome fragment in meiosis that does not have a centromere (aka, acentric fragment)? Ans: It is lost.... Is the outcome the different for the acentric fragment in mitosis? Ans: no What is the consequence of a terminal deletion in meiosis? Ans: gametes are absorbed What are 2 possible outcomes of 2 chromosome breaks occurring on the same chromosome arm? (note that one outcome has 2 parts to it) Ans: paracentric inversion is one and a acentric fragment with a chromosome containing a deletion is the other 2 What are the 2 possible outcomes of 2 chromosome breaks occurring, but on different arms of the same chromosome? (note that one outcome has 2 parts to it) Ans: pericenric inversion is one and a acentric fragment with a ring chromosome is that other What are the 2 outcomes of 2 different chromosomes each having a break occur? (note that one outcome has 2 parts to it) Ans: option 1 is a reciprocal translocation, option 2 is an acentric fragment and a dicentric chromosome What is the difference between a gene and an allele? Ans: alleles are different forms of a gene What happens with translocations during mitosis? Ans: Mitosis behaves fine, as it is sister chromatids migrating to opposite poles What happens with translocations during meiosis? (hint there are 4 of them) Ans: pairing during meiosis I is "different", fragments without centromeres are lost, dicentric chromosomes are broken, recombination is reduced What is a dicentric chromosome? 3 Ans: a chromosome with 2 centromeres What does genetic diversity supply