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kvasek [131]
3 years ago
6

Which of these is required for natural selection to happen?

Biology
1 answer:
boyakko [2]3 years ago
3 0
Hey dude you need to put the choices
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Cuál es el campo de estudio de ADN ​
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genomics

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it's is the study of genes and DNA ( deoxyribonucleic acid)

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Question 8 of 10
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Reason; Warm air rises, and when it rises it becomes cooler. ... If the pressure of the surrounding air is reduced, then the rising air parcel will expand. The molecules of air are doing work as they expand. This will affect the parcel's temperature (which is the average kinetic energy of the molecules in the air parcel).
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Maya's father told her that hummingbirds like to drink the nectar from red flowers. Maya noticed that most of the hummingbird fe
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The color of the birdfeeders

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A disadvantage of sexual reproduction is that
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3 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
vova2212 [387]

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.

When Lactose is present in the environment without glucose then the Catabolite repressor protein will bind to the CAP Site, and lactose will bind to the repressor [regulatory gene product], as a result, the repressor gets deactivated and the transcription takes place.

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

#SPJ4

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2 years ago
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