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3 years ago

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Myxococcus xanthus shuts off DNA replication upon starvation, but cells can finish any DNA replication already in progress. Thos

e cells that complete DNA replication will eventually become myxospores. What mechanism most likely allows xanthus to do this

1 answer:

Lelechka [254]3 years ago

5 0

Answer:

<em>DnaA transcription is shut off upon starvation </em>

Explanation:

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If one jar of coffee costs $y, what will be the cost of four jars of coffee

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Your answer would be $4 times $y.

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In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative individuals do not. If the Rh

bixtya [17]

Answer: 60%

Explanation:

In population genetics, the Hardy-Weinberg Principle states that the genetic composition of a population remains in equilibrium as long as no natural selection or other factors are active and no mutations occur.

The frequencies of the genotypes of an individual locus will be set to a particular equilibrium value.<u> It also specifies that these equilibrium frequencies can be represented as a simple function of the allelic frequencies at that locus</u>. In the simplest case, with a locus with two alleles A and a, with allele frequencies of p and q respectively, the principle predicts that <u>the genotypic frequency for the dominant homozygous AA is p^2, that of the heterozygous Aa is 2pq and that of the recessive homozygous aa, is q^2. The allele frequency of a is represented as p and the frequency of recessive allele is q.</u>

The three genotypes AA : Aa : aa appear in a ratio p² : 2pq : q². If we add them up, we get the unit:

p^2 + 2pq + q^2 = (p + q)^2 = 1

And p + q = 1

<u>Rh-positive genotypes are represented as AA (homozygous dominant) or Aa (heterozygous) since the presence of a single dominant allele is sufficient to express the phenotype. While Rh-negative genotypes are represented as aa. </u>

If 84% of the population is Rh-positive, that means that this percentage includes all those who are AA and Aa. Then 16% are aa.

F(aa)=q^2=0.16

then F(a)=q=0.4

And since p + q = 1, p + 0.4 = 1, then p is 0.6

We can also calculate the rest, then F(AA)=p^2= 0.36

So F(Aa)= 2pq = 2 x 0.6 x 0.4 = 0.48

Notice that 0.36 + 0.16 + 0.48 = 1

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Assignment Summary For this assignment, you will model the structures of the cell and describe their functions. You will do this

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The model of the structures of the cell and and their functions is given in the image attached.

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Some explanation on structure of cells is given below:

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Note that all cell is known to be made up of one nucleus and also a kind of membrane-bound organelles that can be seen in the cytoplasm.

Mitochondria:

This is known to be a double membrane-bound organelle that is known to function by acting as the site for the energy transactions and it is made for the survival of all cell.

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