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bazaltina [42]
2 years ago
9

What is the purpose of operons in prokaryotes?

Biology
1 answer:
Tems11 [23]2 years ago
4 0
The operon is effectively the center of transcriptional control. In addition to its main structural genes, the operon houses an operator and a promoter. In front of the promoter lies a regulatory gene that produces repressor proteins. When a repressor is in its active state, it binds to the operator.
Hope this helped.
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For each phase,describe at least one way mistakes during the cell cycle could result in problems
Anna35 [415]
Copying of cellular components and cleaving of cell into two independent cells.
If a cell is not fully-grown or does not have an appropriate cellular environment, it can enter G0 where it can stay for as long as it is necessary.
4 0
3 years ago
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In northern Canada, a population of rabbits was predominantly white in color. The allele for white color is recessive, while the
Alex777 [14]

Answer:

D.

Explanation:

Explained by natural selection. Those with favored traits in an environment are more likely to survive and pass down the allele. Thus in this situation a grey rabbit is more likely to survive and blend in.

4 0
3 years ago
A cell with a diploid number of 24 undergoes MITOSIS, how many chromosomes are in each daughter cell?
GalinKa [24]

Answer:12.

Containing two complete sets of chromosomes, one from each parent.

Explanation:   Once mitosis is complete, the cell has two groups of 46 chromosomes, each enclosed with their own nuclear membrane. The cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.

4 0
2 years ago
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You cross two true-breeding parents (one with yellow seeds and one with green seeds), grow and self-pollinate the F1 generation,
Andru [333]

Answer:

1500

Explanation:

Let's assume that the allele for yellow seed color is "Y" and the allele for green seed color is "y". Genotype of pure breeding yellow seeded plant would be "YY" and that of the green seeded plant would be "yy". A cross between YY and yy gives all heterozygous yellow seeded plants (Yy) in F1 progeny. Self pollination of two F1 plants (Yy x Yy) obtains F2 generation in 3 yellow: 1 green ratio.

The total population size of F2 generation = 2000

The proportion of yellow seeded plants in F2 generation = 3/4 (since the F2 phenotype ratio is given 3 yellow: 1 green)

Therefore, total number of yellow seeded plants in F2 progeny = 3/4 x 2000= 1500

3 0
3 years ago
What is expected to happen to the birth rate as population density and competition increase? A. increases B. remains the same C.
barxatty [35]
I think the answer is C. Hope it helps
8 0
3 years ago
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