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4 years ago

During DNA replication,

Biology

1 answer:

aivan3 [116]4 years ago

4 0

Answer:

For the first part, the correct option is C

"methylation of the DNA is maintained because methylation enzymes act at DNA sites where one strand is already methylated and thus correctly methylates daughter strands after replication."

DNA methylation is an important process that maintains which genes will be 'on' or 'off'. Generally the methylated DNA regions are turns off the gene as it blocks transcription. One example of DNA methylation is the inactivation of the X-chromosome in females.

For the second part, the correct option is D

"Genetic females would become males."

The exon 2 region in transformer (tra) protein is found only in female flies and so will have no effect on male flies. It is responsible for somatic sex determination in female flies. A mutation in this protein would result in a male fly who is sterile, that is, one who cannot reproduce.

Hope that answers the question, have a great day!

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Sphinxa [80]

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3 years ago

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xz_007 [3.2K]

Answer:

compare and contrast
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Explanation:

COMPARE AND CONTRAST:

DNA is a double-stranded molecule while RNA is a single-stranded molecule. DNA is stable under alkaline conditions while RNA is not stable. ...DNA and RNA base pairing is slightly different since DNA uses the bases adenine, thymine, cytosine, and guanine; RNA uses adenine, uracil, cytosine, and guanine

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How is DNA replicated? Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.

PROCESS OF TRANSCRIPTION:

Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule. RNA polymerase is the maintranscription enzyme. Transcriptionbegins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins).

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3 years ago

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Answer:

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