Q162 / 180 · NEET 2018 · Zoology

Select the correct statement.

  • A
    Spliceosomes take part in translation.
  • B
    Punnett square was developed by a British botanist.
  • Correct answer
    C
    Franklin Stahl coined the term "linkage".
  • D
    Transduction was discovered by S. Altman.

Solution

Punnett Square is a checker-board used to show the result of a cross between two organisms. The checkerboard was devised by a British geneticist, Reginald Punnett (1927). It depicts both genotypes and phenotypes of the progeny.

Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction. The term "linkage" was coined by T.H. Morgan. Franklin Stahl with Matthew Meselson proved the semi-conservative replication of DNA. Spliceosomes are formed during post-transcriptional changes in eukaryotes. It is a complex, formed between 5' end (GU) and 3' end (AG) of the intron to remove it.
Transduction is a method of sexual reproduction in bacteria. It involves the transfer of foreign genes by means of viruses. It was discovered by Zinder and his researcher Lederberg (1952) in Salmonella typhimurium.

Hence, the correct answer is option: 'C'.

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