Considering only the work of Griffith, Aver, Hersey & Chase, Beadle & Tatum, and Garrod, which of the following is the most complete supported statement? Question options: DNA is the genetic material genes act through enzumes DNA directs the activity of enzymes none of these statements are supported by the work of the listed scientists a gene is a unit of DNA that directs the synthesis of a polypeptide or functional RNA molecule DNA is transcribed into RNA Which of the following statements regarding the nature of genes is FALSE? Question options: some proteins consist of multiple polypeptide chains not all enzymes are products of genes the ultimate products of some genes are functional RNAs rather than any types of polypeptides all of these statements are TRUE a gene is a unit of DNA a single RNA molecule can be spliced in multiple ways to produce multiple different proteins

In 1928 Frederick griffith in a series of experiments with streptococcus pneumoniae, witnessed a miraculous transformation in the bacteria. During the course of his experiment a living organism had changed in physical form. Question number:-1 All the given scientist search for genetic material, 1. Griffith concluded that R strain bacteria had somehow been transformed by the heat killed S strain bacteria. Some 'transforming principle' transferred from the heat killed S strain, had enable the R strain to synthesise a smooth polysaccharide coat and become virulent. Hai baar baar chemical nature of genetic material was not identified from his experiment. 2. Later in 1933 -44 Avery and other scientist suggest that DNA caused the transformation. They conclude that DNA is the hereditary material but not all biologist were convinced. 3. In 1952 Hershey and Chase use bacteriophage and provide unequivocal proof that DNA is the genetic material. 4. Beadle and Tatum proved that enzyme are synthesized by genes which control metabolic process. Hence, FIRST option is correct.Reasons for incorrect options: (qn number -1) Second option: this statement only support beadle and Tatum experiment. Third Option: rRNA, tRNA all some others RNA not translated into Protein. But is not provide by all about the scientist. Fourth Option: not applicable. Fifth Option: this description defined cistron concept. Sixth Option: it come under central dogma, proposed by other scientist. Reasons for correct option (question number 2) A gene is a unit of DNA. It produce either protein (through the process of transcription and translation) or functional RNAs, for example rRNA, tRNA etc. By the process of transcription. These rRNA and tRNA can't translated into Protein. Some Protein consists of multiple polypeptide chain, for example haemoglobin. During the formation of protein mRNA can processed where some parts are spliced and rejoin. Some enzyme not a product of only one genes but composed of polypeptide that is coded by different type of genes. Hence, all the Options are TRUE (fourth Option).

Answered: Considering only the work of Griffith, Aver, Hersey & Chase, Beadle & Tatum, and Garrod, which of the following is the most complete supported statement?…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN: 9780134580999

Author: Elaine N. Marieb, Katja N. Hoehn

Publisher: PEARSON

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Question

Considering only the work of Griffith, Aver, Hersey & Chase, Beadle & Tatum, and Garrod, which of the following is the most complete supported statement?

Question options:

	DNA is the genetic material
	genes act through enzumes
	DNA directs the activity of enzymes
	none of these statements are supported by the work of the listed scientists
	a gene is a unit of DNA that directs the synthesis of a polypeptide or functional RNA molecule
	DNA is transcribed into RNA

Which of the following statements regarding the nature of genes is FALSE?

Question options:

	some proteins consist of multiple polypeptide chains
	not all enzymes are products of genes
	the ultimate products of some genes are functional RNAs rather than any types of polypeptides
	all of these statements are TRUE
	a gene is a unit of DNA
	a single RNA molecule can be spliced in multiple ways to produce multiple different proteins