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Archy [21]
3 years ago
7

What could be the consequence of a mutation that changes the sequence of nucleotides in a promoter?

Biology
1 answer:
Korolek [52]3 years ago
4 0

Answer:

The changes in the sequence of nucleotides present within a promoter is a prime cause of the defected transcriptional regulation, which may eventually result in disease. However, not every modification within the sequence of a promoter influences the regulation of transcription, it relies upon the nature and the location of the genetic defect.  

When a mutation results within the sequence of a promoter region it may hamper the usual procedures of gene stimulation by affecting the step by step alignment of the transcription factors at the promoter region. Therefore, as a consequence, a mutation within the sequence of a promoter may result in the enhancement or reduction in the level of mRNA and thus protein.  

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SashulF [63]

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6 0
2 years ago
Which of the following is true about DNA mutation
Natasha_Volkova [10]

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4 years ago
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5 0
3 years ago
Read 2 more answers
20. View the above sex-linked recessive pedigree. Can you be certain of generation I, individual #1's
zaharov [31]

The genotype of the unknown individual is X^BX^b.

Males receive their X chromosomes from their mother.

They are not equally segregated among the male and female offsprings.

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

20. In case of the 1st pedigree problem, we can see that the male parent has the genotype of X^bY. And the female offspring has the genotype of X^BX^b. If the female gets the X^b from her father, then X^B has to be from the mother.

Now in the male offspring, the offspring gets the X^b from mother, because males get the X chromosome from their mothers. So the mother has the genotype of X^BX^b.

21. The males have the genetic setup of 44 +XY. They get the 44 chromosomes equally from both the parents - 22 from father and 22 from mother. And as the mother has only X chromosomes as the allosomes, then the offspring gets Y chromosome from their father and X chromosome from their mother.

22. In the autosomal characters, the males have both pairs of functional chromosomes, so the relationship of dominant and recessive acts very well. But in case of the allosomes, they have only X chromosomes as the functional one, Y chromosome doesn't have any functional gene. So the gene which is present in X chromosomes, whether dominant or recessive, gets expressed in males. But in females, there are two X chromosomes, so the dominant and recessive characteristics gets reflected there. So in case of presence of one recessive allele, they becomes carriers.

6 0
4 years ago
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