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____ [38]
2 years ago
8

Scientists’ understanding of the role and function of DNA has built up over time. How did the findings from Hershey and Chase’s

bacteriophage experiments likely influence the Meselson-Stahl experiment, and how might Meselson and Stahl’s results help scientists understand how damaged DNA can be inherited by future generations?
Biology
1 answer:
mr_godi [17]2 years ago
8 0

Answer:

Hershey & Chase concluded. after the experiment that the genetic material that is passed from virus to the bacteria is not the protein coat but DNA. It proves the DNA is the genetic material and not the protein.

After labelling the Phage DNA and protein, Hershey and Chase performed a series of experiments like infection, blending and centrifugation. Hershey and Chase gave full evidence of the DNA being a genetic material by their experiments. To perform the experiment, Hershey and Chase have taken T-2 bacteriophage (invaders of E.coli bacteria).

Explanation:

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nika2105 [10]
It played a very big role as without collaborative work from multiple scientists who were working on the discovery of DNA, it would have postponed its discovery by decades perhaps. For that reason - yes, communicating results played a major role in the discovery of the structure of DNA.
6 0
3 years ago
Eye pigment in a particular strain of fly is determined by two genes. An autosomal gene that controls the color of the pigments
Semenov [28]

RrXtXt×RrXTY is representing the cross between the white eyed female and red eyed male.

Option D

<h3><u>Explanation:</u></h3>

The genes that are discussed here both are completely dominant over their recessive alleles. In the autosome, the dominant R gene is responsible for red eye and recessive r gene is responsible for sepia eye. But in allosome, the dominant T gene allows the eye colour to be expressed and the recessive t gene doesn't allow eye colour to be expressed and makes it white.

As the female do have 2 X chromosomes and the female is white eyed, then both the chromosomes of female have t gene.

As the male is red eyed and have one X chromosome, so the male must have atleast one R gene in autosome to make the eye colour red and must have T gene in his X chromosome to make it appear in phenotype.

So the most possible cross that is given here is RrXtXt×RrXTY.

6 0
3 years ago
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Answer: C and E

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docker41 [41]

Answer:

d

Explanation:

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