To determine which two bases are present in equal amounts in a double-stranded DNA molecule, we need to consider the base pairing rules in DNA.

In DNA, adenine (A) always pairs with thymine (T), and cytosine (C) always pairs with guanine (G). This means that the amount of adenine in a DNA molecule should be equal to the amount of thymine, and the amount of cytosine should be equal to the amount of guanine.

Looking at the given options, we can eliminate options (3) and (4) since they involve uracil (U), which is not present in DNA.

Now, we are left with options (1) and (2).

Option (1) states that cytosine (C) and thymine (T) are present in equal amounts. This is incorrect because thymine is not present in equal amounts with cytosine in DNA.

Option (2) states that adenine (A) and thymine (T) are present in equal amounts. This is correct because adenine always pairs with thymine in DNA, so their amounts should be equal.

Therefore, the correct answer is option (2) - adenine and thymine.

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To determine which two bases are present in equal amounts in a double-stranded DNA molecule, we need to consider the base pairing rules in DNA.

In DNA, adenine (A) always pairs with thymine (T), and cytosine (C) always pairs with guanine (G). This means that the amount of adenine in a DNA molecule should be equal to the amount of thymine, and the amount of cytosine should be equal to the amount of guanine.

Looking at the given options, we can eliminate options (3) and (4) since they involve uracil (U), which is not present in DNA.

Now, we are left with options (1) and (2).

Option (1) states that cytosine (C) and thymine (T) are present in equal amounts. This is incorrect because thymine is not present in equal amounts with cytosine in DNA.

Option (2) states that adenine (A) and thymine (T) are present in equal amounts. This is correct because adenine always pairs with thymine in DNA, so their amounts should be equal.

Therefore, the correct answer is option (2) - adenine and thymine.

Knowee AI · Accepted Answer

To determine which two bases are present in equal amounts in a double-stranded DNA molecule, we need to consider the base pairing rules in DNA.

In DNA, adenine (A) always pairs with thymine (T), and cytosine (C) always pairs with guanine (G). This means that the amount of adenine in a DNA molecule should be equal to the amount of thymine, and the amount of cytosine should be equal to the amount of guanine.

Looking at the given options, we can eliminate options (3) and (4) since they involve uracil (U), which is not present in DNA.

Now, we are left with options (1) and (2).

Option (1) states that cytosine (C) and thymine (T) are present in equal amounts. This is incorrect because thymine is not present in equal amounts with cytosine in DNA.

Option (2) states that adenine (A) and thymine (T) are present in equal amounts. This is correct because adenine always pairs with thymine in DNA, so their amounts should be equal.

Therefore, the correct answer is option (2) - adenine and thymine.

Which two bases are present in equal amounts in a double-stranded DNA molecule? (1) cytosine and thymine (2) adenine and thymine (3) ade- nine and uracil (4) cytosine and uracil

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