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tino4ka555 [31]
4 years ago
13

A single-stranded sequence of DNA is shown.

Biology
1 answer:
mojhsa [17]4 years ago
5 0

Answer:

The correct option is (A).

Explanation:

The base-pairing rule illustrates the pairing of purine and pyrimidine bases in the construction of nucleic acids. Adenine and guanine are purines and pyrimidines are cytosine, thymine, and uracil.The total number of base-pair defines the size of the genome of an organism.

Uracil is exclusively present in the RNA. We can infer that purine base pairs with pyrimidine. So, adenine pairs with thymine in the DNA strand with the help of two hydrogen bonds and guanine pairs with cytosine that is supported by the presence of three hydrogen bonds.  

In case of RNA adenine forms double bond with the uracil residue.

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Osteoporosis is more prevalent among women than men because women generally
Ann [662]

Answer:

Have lower bone mass than men have

Explanation:

Osteoporosis is a bone thinning disease that is more prevalent among women than men and typically occurs after 50. The reason women are more likely to get the disease than men is because after 50 many women have gone through or are going through menopause. Menopause causes the ovaries to produce less estrogen which is what had previously been promoting bone density.

The other answers are incorrect because...

A: have more bones in their bodies than men have: for the most part everyone has the same amount of bone in there body (although there are diseases that cause a persons bones to fuse together making them have fewer bones than the average person)

B: take in more calcium then men take in: more calcium would actually cause someone to be less likely to get osteoporosis because it strengthens the bones.

C: exercise more than men do: Osteoporosis is more common in malnourished women and women who do not get regular physical activity to strengthens there bones. So getting more exercise would actually lessen the chance of getting osteoporosis.

Hope this helps! :)

5 0
3 years ago
The punnets square shows a text cross of mice that are heterozygous for both traits what will the offspring be fill in the white
Sliva [168]

Answer:

Explanation:

Dominant allele are allele that finds expression the offspring physical expression while recessive allele are alleles that are not expressed in the offspring phenotype.

6 0
3 years ago
What else causes excess trapped carbon dioxide on Earth? Choose ALL THAT APPLY 1. Automobiles and airplanes 2. Agriculture 3. Vo
g100num [7]

Answer:

1. Automobiles and Airplanes

Explanation:

On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2).

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Answer:

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