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IRINA_888 [86]
3 years ago
9

Current research indicates that supplementation with what before pregnancy may reduce the risk of placental abruption?

Biology
1 answer:
Snezhnost [94]3 years ago
6 0
Supplementation of folic acid or the synthetic form of Vitamin B9 before or during pregnancy may prevent placental abruption or pregnancy complication. Supplementation of Folic Acid helps in preventing Neural Tube Defects or serious birth defects of the spinal cord or the brain itself. 
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Maoi's were discovered by accident when iproniazid was being used to treat.
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MAOI's work better with patients whose depression becomes more acute as the day progresses. An enzyme named monoamine oxidase is intricate in eliminating the serotonin, neurotransmitters norepinephrine and dopamine to the brain. MAOIs avoid this from happening which makes more of these brain chemicals obtainable to effect alterations in together cells and circuits that have been obstructed by depression.
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Which of the following statements about the monomers and polymers found in living organisms is
hodyreva [135]

Answer: Option C is false.

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3 years ago
Suppose a population is carrying a condition controlled by two alleles: R (dominant) and r (recessive). Only homozygous individu
White raven [17]

<span><u>The answer is A. 72.25 percent.</u>

The Hardy-Weinberg principle can be used:</span>

<em>p² + 2pq + q² = 1</em> and <em>p + q = 1</em>

where <em>p</em> and <em>q</em> are the frequencies of the alleles, and <em>p²</em>, <em>q²</em> and <em>2pq </em>are the frequencies of the genotypes.

<span>The <em>r</em> allele (<em>q</em>) is found in 15% of the population:
q = 15% = 15/100
Thus, q = </span><span>0.15

To calculate the <em>R</em> allele frequency (<em>p</em>), the formula p + q = 1 is used:
If p + q = 1, then p = 1 - q
p = 1 - 0.15
Thus, </span><span>p = 0.85

Knowing the frequency of the <em>R</em> allele (<em>p</em>), it is easy to determine the frequency of the RR genotype (p²):
p² = 0.85² = 0.7225

Expressed in percentage, p² = 72.25%.</span>

4 0
3 years ago
Which describes a climate effect on the rate of weathering?
tester [92]

Answer:

Cold climates favor mechanical weathering.

Explanation:

A cold, dry climate will produce the lowest rate of weathering. A warm, wet climate will produce the highest rate of weathering. The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering

8 0
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