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Lelu [443]
4 years ago
12

all three Dna samples have different charges. All DNA samples have the same (negative) charge because nucleic acids have a phosp

hate backbone. This negative charge is the reason that DNA migrates toward the positive end of the gel
Biology
1 answer:
Lapatulllka [165]4 years ago
3 0

Answer:

Correct, DNA is a negatively charged nucleic acid. This is because the phosphates present in the sugar-phosphate backbone are negative and hence, make the DNA acidic. That is why DNA is called deoxyribonucleic acid

In tests like gel electrophoresis, the DNA will move towards the positive end of the gel. This is because positive attracts the negative. A DNA sample can be separated on the basis of the negativity it possesses.

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In humans, six fingers (f) is the dominant trait; five fingers (f) is the recessive trait. if the father is heterozygous for six
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The probability of the offspring of a heterozygous father and homzygous mother having five fingers is 50%.

<h3>How to calculate genotype of a cross?</h3>

According to this question, a gene coding for the number of fingers in humans is involved. The allele for six fingers (F) is the dominant trait while the allele for five fingers (f) is the recessive trait.

If a cross between a heterozygous father that posseses a genotype of Ff and a homzygous mother that posseses a genotype of ff, the following offsprings will be produced:

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This shows that the probability of the offspring of a heterozygous father and homzygous mother having five fingers is ½ (50%).

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