1) Genetic diversity is increased by which of the following mechanisms? (mark al

Question

1) Genetic diversity is increased by which of the following mechanisms? (mark all that apply? a) meiosis   b) mitosis   c) genetic recombination   d) independent assortment   e) crossing over

2) if the genotype of an organism is AAbbCc, then Abc would represent: a) the genotype of the offspring   b) a possible penotype of the offspring   c) a genotype of a gamete   d) a possible zygote    d) the P generation

3) During the elongation phase of translation in bacteria, the P ite of the ribosome is occupied by the:   a) changed tRNA that has not yet released its amino acid    b) tRNA that has already released its amino acid, but not yet been released from the ribosome      c) termination codon     d) tRNA that is attached to the growing polypeptide chain     e) amino acid of the charged tRNA

Explanation / Answer

1.Genetic diversity is termed as the variation in alleles in a gene pool. So the genetic variation or diversity is increased by meiosis, genetic recombination and crossing over phenomenon.

2. The Abc would represent a genotype of a gamete as AAbbCc is the diploid genotype and Abc would represent the haploid nature i.e. gamete.

3. During the elongation phase of the translation, the P-site is always occupied by tRNA that is attached to the growing polypeptide chain. Because during the elongation phase a new tRNA occupies the A-site and the previous amino acid sequence would be present in the P-site along with the tRNA

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