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Dahasolnce [82]
3 years ago
15

3. How many times can the nuclear DNA replicate during the life cycle of a cell? *

Biology
1 answer:
WITCHER [35]3 years ago
5 0
Only once because the DNA replication initiation is tightly linked to cell cycle progression,ensuring that replication occur only once per cycle
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Please Help!!!!!!!!!!
Lera25 [3.4K]

the area of the square is:  100


the area of the circle is: 78.5


i THINK if you subtract it, it will be 21.5

4 0
3 years ago
Suppose that in unicorns, two autosomal loci interact to determine the type of tail. One locus controls whether a tail is presen
Nina [5.8K]

Explanation:

As you can see in the picture below, this is a dihybrid cross with a twist.

We can accomplish that mutually parentages are heterozygotes for both characters because the genotypes are  

9 unicorns with curly tails (shown in green)

3 with straight tails (shown in red)

3  curly tales trait carriers with no tail (shown in dark blue)

1  straight tail trait carriers with no tail ( shown in light blue)

If this was an ordinary case of the dihybrid cross, we would get a 9:3:3:1 phenotype ratio.

However, since the first trait, the presence of the tail, is affecting the other trait, the trait texture, the ratio is altered.

\frac{1}{4} of the offspring (genotypes tt C_   and tt SS) has no tail, therefore we cannot observe the texture of the tail (some of the tailless individuals have Curly alleles -blue squares marked with green, some of them have Straight alleles -blue square marked with red ).

Therefore, the altered ratio is  \frac{1}{2} curly tails,\frac{1}{4} straight tales, \frac{1}{4} tailless

6 0
3 years ago
Nucleic acids are polymers. What is the repeating monomeric unit that composes the polymer?
Papessa [141]

Answer:

Explanation:.

6 0
3 years ago
Nonspecific permeases a. allow a variety of molecules to cross the cytoplasmic membrane. b. allow only water to cross the cytopl
andriy [413]

Answer:

a. allow a variety of molecules to cross the cytoplasmic membrane

Explanation:

The cells have different molecules in its membrane. As a membrane the main function of it is to regulate the income and outcome of substances that the cell needs or the cell has like some wastes.

Some of these molecules can be some proteins like the permeases, that is going to  regulate the solutes that can enter the cell, but since they are non specific, that means that can not make the difference among one carbohydrate and another (as an example).

3 0
3 years ago
Which of the following is not a possible effect of rising carbon dioxide levels on plants? a. increased photosynthesis b. increa
Marat540 [252]

Answer:

option D

Explanation:

how the plant growth will be enhanced, so it seems incorrect.

3 0
3 years ago
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