Q) Explain what is meant by reduction division during meiosis
Main points | |
Key idea: | What is reduction division of meiosis |
·Meiosis (a form of nuclear division) results in half the no. of chrom in each daughter nucleus as compared to original parent nucleus ·Hence, reduction division refers to the nuclear division where no, of chrom is halved during formation of gametes | |
Key idea: | Restoration of diploid no in subsequent generations |
·Diploid no (2n) restored during fusion of male + female gametes during sexual fertilization ·Ref to combination of genetic material fr 2 ind | |
Key idea: | Significance of reduction division of meiosis |
·Generates genetic variation in a sexually producing population by producing gametes w diff combinations of alleles ·Due to crossing over + indep assortment of chrom ·Ref to random mating + fusion of gametes during sexual reproduction also contribute to genetic variation among offspring | |
Comments: (i) Visualize the answer with the aid of a labelled diagram. (ii) Verbalize the answer + write down the main points w/o referring to the answer (use abbreviations) (iii) Read again within the next 24h & once more within 72h (do not spend more than 10min) (iv) Be able to compare the similarities and differences between meiosis and mitosis including the significance of each type of nuclear division. | |
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