Medgar Evers College Department of Course Name: Microbiology B1O 211 Quiz 2 wait
ID: 261780 • Letter: M
Question
Medgar Evers College Department of Course Name: Microbiology B1O 211 Quiz 2 waite script must be handed in at the end of the siuna bk tite your NAME answer the question. Make question or the options I: on the seantron as indicated, anS ID NUMBF-R in the "identification number blak Chm io each question. Be careful, because some incorrect answers may be Make sure that you fill in one and only one scantron bubble fot each question If you feel ambiguous inswer options are ambiguous, plesse ask me to clarify daring the examination reALLquestions in section A and any ONE question in section B which will be regarded as extra credit Section A 1. Mitosis is the duplication of A) sex cells B) autosomal cells C) haploid cells D) special autosomal cetls 2. Which of the following is not a unique feature of meiosis? A) synapsis B) homologous recombination C)reduction division D) random separation of chromosomes E) chromosome replication 3. Crossing-over can occur between homologues during A) mitosis B) meiosis C) autosomal cells D) All of the above 4. The difference between anaphase I and anaphase2 A) homologous chromosomes move toward opposite poles but sister chromatids move toward opposite poles B) homologous chromosomes move toward opposite poles but genetically different chromosomes move randomly toward opposite pole 5. Most multicellular eukaryotes form gametes by D) duplication mitosisB) meiosis) binary fission distinguishes meiotic prophase from mitotic prophase. A)The number of per chromosome B) SynapsisC) The number of homologues 6 D) the number of chromatins chromosome 7. If a gamete has 4 chromosomes, the somatic cells formed from it have chromosomes A)8 C)ID)16 D) Allof the above 8. Sexual reproduction favors B) stable populationsgenetic diversity c instability B)False 9 Crossing over typically occurs between tetrads chromosome A) TrueExplanation / Answer
Q.1 – Option B.
Autosomal cells are somatic cells which undergo mitosis. Sex cells undergo meiosis.
Q.2 – Option E.
Chromosome replication takes place in mitosis not in meiosis. Reduction division takes place in meiosis.
Q.3 – Option B.
Crossing over takes place between the sister chromatids of homologous chromosome in meiosis.
Q.4 – Option A.
Homologous chromosome separates and move towards the opposite pole during Anaphase 1 of meiosis 1.
Sister chromatids separated and move towards the opposite pole during Anaphase 2 of meiosis 2.
Q.5 – Option B.
Gametes formation in eukaryotes occur by means of reduction division which is nothing but the meiosis.
Binary fission takes place in prokaryotes.
Q.6 – Option B.
Pairing of homologous chromosome is known as synapsis. This occur during prophase 1 of meiosis 1.
Synapsis does not occur in mitosis.
Q.7 – Option A.
Gametes are haploid and the somatic cells are diploid. If the gamete has 4 chromosomes then the somatic cells has 8 chromosomes.
Q.8 – Option C.
Genetic diversity is favoured by sexual reproduction.
Crossing over and chromosomal recombination which happens during the meiosis step favours the genetic recombination.
Q.9 – Option A.
Crossing over takes place between the sister chromatids of homologous chromosome.