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Alla [95]
2 years ago
12

Determine the phenotype based on the given genotypes.

Biology
2 answers:
In-s [12.5K]2 years ago
7 0

Answer:

there's nothing attached

Explanation:

Elza [17]2 years ago
3 0

Answer:

theres no image

Explanation:

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just olya [345]
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Give one possible explanation for why the graph drops after 18 hours
tekilochka [14]

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The lactose (lac) operon in E. coli is an example of a repressed gene when lactose is not available in a cell. In 3-5 sentences
irakobra [83]

Answer:

Please find the detailed explanation of this statement below

Explanation:

Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.

However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.

Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.

4 0
3 years ago
Why are the sepals and petals reffered to as "accessory parts" of the plant?
iren2701 [21]
The answer is because they are not necessary for the plant to reproduce
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3 years ago
Functions of microscope​
Elan Coil [88]

Answer:

used to observe small objects, even cells

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The image of an object is magnified through at least one lens in the microscope.

7 0
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