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igomit [66]
3 years ago
13

The group that includes human and their direct ancestors is called the

Biology
2 answers:
HACTEHA [7]3 years ago
6 0
The group that includes human and their direct ancestors is called the hominids.

hope this helps, God bless!
den301095 [7]3 years ago
3 0

Answer:

The correct answer is hominids.

Explanation:

The group, which comprises modern humans and their direct ancestors are termed as Hominidae. It is also known as great apes or Hominids. Basically, the term Hominidae is considered for only the humans and their closest relatives. However, some of the people still continue to use this term in its limited sense, rather than in the modern sense.

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*Repression

The synthesis of operon mRNA is controlled by a repressor that blocks transcription when bound by tryptophan, which acts as a co-repressor.

The repressor, a 108 aa homodimer (ie 2 apo-repressor), has helix-turn-helix domains that interact with inverted repeats at the major groove of the operator, thus allowing its fixation.

In the absence of trp, the repressor is inactive and does not attach to the operator. The RNA polymerase can bind to the promoter and transcribe the trp E, D, C, B, A structural genes.

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2nd case: High rate of trp, stop transcription, → Formation of the attenuator in the presence of trp. This one will attenuate the synthesis of tryptophan.

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Answer:

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