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GaryK [48]
3 years ago
12

Strawberry DNA Extraction lab What was the purpose of the Sodium Chloride? Include a discussion of polarity and charged particle

s.
Biology
1 answer:
lys-0071 [83]3 years ago
5 0

Answer:

Sodium chloride removes proteins from DNA and helps in DNA precipitation.

Explanation:

The Deoxyribonucleic acid (DNA) is negatively charged due to the highly polar phosphate groups that make up the phosphate backbone. The molecules of water are also highly polar and they have positive charge, thereby water molecules interact with the negative charges of the DNA. The sodium chloride generates temporary attraction forces between sodium (positive) ions and the DNA backbone (negative), thereby DNA can be disassociated from the aqueous layer. Moreover, sodium chloride helps to remove proteins (histones) that bound to DNA and also helps to maintain proteins in the aqueous layer.

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3 years ago
Briefly explain why only chromosomes of a homologous pair can have their alleles referred toas homozygous or heterozygous
tatuchka [14]

This is due to the fact that only homologous chromosomes would have identical genes located at identical sites on those chromosomes. Otherwise, there would be no connection between the alleles of various genes.

Although the genes and loci of the two members of the homologous pair are similar, the alleles may vary.For instance, both allele possess the genes responsible for the attribute of eye colour. While the one has alleles for the blue-eye trait, other has alleles for the brown-eye trait. The homologous chromosomes are said to be heterozygous in this instance since the alleles are different.

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2 years ago
Which best describes transformation in bacteria
Shtirlitz [24]

Answer:

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Explanation:

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4 0
4 years ago
How is it possible to explain one parent with curly hair, one parent with straight hair, and
melomori [17]

Answer:

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Explanation:

8 0
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Read 2 more answers
Coursebook questions - page 44
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