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kow [346]
3 years ago
8

Qué relación existe entre tus intereses ,necesidades y aspiraciones como adolescente y estas situaciones de riesgo?

Biology
1 answer:
Rudiy273 years ago
4 0

Answer:

Están interconectados entre sí.

Explicación:

Existe una relación directa entre los intereses, las necesidades y las aspiraciones de la adolescencia porque todos están interconectados entre sí. Como adolescente, nuestro interés es lograr el éxito en la vida especialmente en el campo de la educación y adquirir la profesión que nos es favorita. Como adolescente, nuestras necesidades son buena comida, ropa, un hogar para vivir y una educación adecuada.

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The imaging technique that provides the greatest contrast between brain tissues of different densities is:
OleMash [197]

<span>Magnetic resonance imaging is a technology that uses magnetic fields and radio waves to produce high quality 2 or 3 dimensional images of the brain structure without using radioactive tracers and ionizing radiation. The magnetic resonance intensity is proportional to the density of the protons in various tissues.</span>

6 0
3 years ago
Cystic fibrosis (CF) is one of most common recessive disorders among Caucasians it affects 1 in 1,700 newborns. What is the expe
Phantasy [73]

Answer: The expected frequency of carriers is P(Aa)=0.046.

The proportion of childs with CF is P(aa)=0.024.

25% of having a child with CF (aa).

Explanation:

Hardy-Weinberg's principle states that in a large enough population, in which mating occurs randomly and which is not subject to mutation, selection or migration, gene and genotype frequencies remain constant from one generation to the next one, once a state of equilibrium has been reached which in autosomal loci is reached after one generation. So, a population is said to be in balance when the alleles in polymorphic systems maintain their frequency in the population over generations.

Given the gene allele frequencies in the gene pool of a population, it is possible to calculate the expected frequencies of the progeny's genotypes and phenotypes. <u>If P = percentage of the allele A (dominant) and q = percentage of the allele a (recessive)</u>, the checkerboard method can be used to produce all possible random combinations of these gametes.

Note that p + q = 1, that is, the percentages of gametes A and a must equal 100% to include all gametes in the gene pool.

The genotypic frequencies added together should also equal 1 or 100%, and all the equations can be summarized as follows:

p+q=1\\(p+q)^{2}  = p^{2} +2pq+q^{2} = 1\\P(AA)=p^{2} \\P(aa)=q^{2} \\P(Aa)=2pq1

So, there are 1700 individuals and only one is affected. Since it is a recessive disorder, the genotype of that individual must be aa. So the genotypic frequency of aa is 1/1700=0.000588.

Then, P(aa)=q^{2}=0.000588. And with that we can calculate the value of q,

P(a)=q=\sqrt{0.000588}=0.024

And since we know that p+q=1, we can find out the value of p.

p+0.024=1\\1-0.024=p\\p=0.976

Next, we find out the genotypic frequency of the genotype AA:

P(A)=p=0.976\\P(AA)=p^{2} = 0.976^{2}=0.95

Now, we can find out the genotypic frequency of the genotype Aa:

P(Aa)=2pq=2 x 0.976 x 0.024 = 0.046

Notice than:

p^{2} + 2pq + q^{2} = 1\\x^{2} 0.976^{2} + 2 x 0.976 x 0.024 + 0.024^{2} = 1

Then, the expected frequency of carriers is P(Aa)=0.046

The proportion of childs with CF is P(aa)=0.024

If two parents are carriers, then their genotypes are Aa.

Gametes produced by them can only have one allele of the gene. So they can either produce A gametes, or a gametes.

In the punnett square, we can see that there genotypic ratio is 2:1:1 and the phenotypic ratio is 3:1. So, there is a probability of 25% of having an unaffected child, with both normal alleles (AA); 50% of having a carrier child (Aa) and 25% (0.25) of having a child with CF (aa).

5 0
3 years ago
Suppose there are two genes on two different chromosomes, one gene called G and the other called D. An individual has the genoty
Ronch [10]

Answer:

as the question does not contains image i have  already mentioned the link to image in ask for detail section therefore i will answer according to that image.

the answer is "B"

Explanation:

Because before crossing over but after duplication both chromosomes will have same alleles as GgDd therefore according to the image the answer will be option "B". as this option showed duplicated chromosomes.

7 0
3 years ago
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¿puede la glicoproteina cambiar de orientación ,quedando la parte glucida hacia adentro de la celula ?
mixas84 [53]
I cannot under stand you sorry can’t help you.
6 0
3 years ago
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Which term refers to a contiguous genetic complex that is under coordinated control?.
dolphi86 [110]

Answer: operon

Explanation:

An operon is a cluster of genes that are transcribed together to give a single messenger RNA (mRNA) molecule, which therefore encodes multiple proteins (Fig. 16.11). Such polycistronic mRNA is typically found in prokaryotes.

4 0
2 years ago
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