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xenn [34]
2 years ago
14

Does mitosis only occur in humans? Pls help!

Biology
1 answer:
olga nikolaevna [1]2 years ago
3 0
No, it doesn't. It also occurs in animals and plants.
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Enclosed within the nucleolus of the cell.
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If you categorize humans into large groups based on physical characteristics such as facial features and hair texture, you are r
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If you categorize humans into large groups based on physical characteristics such as facial features and hair texture, you are relying on which form of categorization?

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Answer:

B. Race

Explanation:

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2 years ago
What is the effect on transcription of the structural and regulatory genes of the lac operon when lactose is present in the envi
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In the lac operon, glucose also plays an important role along with lactose. When Lactose is present in the environment along with glucose then it cannot deactivate the regulator gene [repressor], as a result, the repressor will bind to the operator and the transcription will be blocked.

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Lac operon: It is a set of three structural genes z, y, and a which are all transcribed and regulated under one single promoter. The three genes code for β-galactosidase, lactose permease, and transacetylase respectively.

β-galactosidase is responsible for breaking the lactose into glucose and galactose, lactose permease is responsible for transporting lactose across the cell membrane and transacetylase attaches a particular chemical group to target molecules.

Learn more about Lac operon here

brainly.com/question/1217140

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2 years ago
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Compare and contrast rna and dna.
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Rna is like half of dna 
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