6) Answer the questions below based on this diagram: 5\'AUGAUGAUGAUG3\' This R
ID: 83973 • Letter: 6
Question
6) Answer the questions below based on this diagram: 5'AUGAUGAUGAUG3'
This RNA transcript was generated using a synthetic DNA template. The letters B, D, E, F, G, and H have been selected to represent different amino acids. Assume that each different group of codons is a different amino acid.
If you know the order of the nucleotides in a certain gene, what is the best way to determine which reading frame method is actually being used in a particular organism?
12) Genetic variability in sexually reproducing organisms arises within
a)crossover events between nonsister chromatids.
b)crossover events between sister chromatids.
c)egg and sperm genetic recombination from distinct individuals.
d)egg and sperm genetic recombination from an individual.
e)none of the alternatives
20) Mitosis and meiosis differ in that
a) sister chromatids are separated in prophase I of meiosis.
b) sister chromatids are separated in anaphase of mitosis.
c) homologues are separated in prophase I of meiosis.
d) homologues are separated in prophase II of meiosis.
e) homologues are separated in prophase of mitosis.
24) The observed "puffs" in the polytene chromosomes of Drosophilia are sites of:
a) induction
b) translation
c) condensation
d) attenuation
e) transcription
34. Which of the following organisms utilizes polycistronic mRNAs?
a) mammals
b) C. elegans
c) E. coli only
d) mammals and C. elegans
e) all of the above alternatives
Explanation / Answer
20. B
Seperation of sister chromatuds take place in anaphase of mitosis.
Homologous chromosome seperated in anaphase 1 of meiosis.
24. C
The observed puffs in the polytene chromosomes of Drosophilia are sites of
condensation.
34. C
In prokaryotes, mRNA molecules are polycistronic, that means they contain the coding sequence of many genes.
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