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3 years ago

Why can you predict the base sequence of one strand in a molecule of DNA if you know the sequence of the other strand?

Biology

2 answers:

Hatshy [7]3 years ago

8 0

In DNA, each base pairs up with only
one other base

Leto [7]3 years ago

5 0

Answer:

Option A, In DNA, each base pairs up with only one other base.

Explanation:

DNA is made up of two complementary nucleotide (also referred to as base pairs). It is the purine which associates with the pyrimidine group.

The four bases in DNA are

• adenine (A) - a purine

• cytosine(C) - a pyrimidine

• guanine (G) - a purine

• thymine (T) - a pyrimidine

Adenine is complementary to thymine and cytosine is complementary to guanine . Thus, Adenine forms complementary pair with thymine and cytosine forms complementary pair with guanine.

Hence, option A is correct.

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Propose a hypothesis of why the flu vaccine must be given every year but for most viral infections one or two doses of the vacci

ahrayia [7]

The flu vaccine changes every year. The flu vaccine is based on a predicted strain that is anticipated to be the most infectious that year. Thats why people who sometimes get the vaccination still get the flu, they don't have the antibodies for the strain they were infected with. Strains for viral disease don't change very much and usually the vaccination for them cover them well.

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3 years ago

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Carbon dioxide Direct effect on orca

Afina-wow [57]

Answer:

How does carbon dioxide affect orca?

Image result for Carbon dioxide Direct effect on orca

Once those waters return to the ocean floor, they can take with them large amounts of carbon dioxide, sequestering the gas away for hundreds or thousands of years

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3 0

3 years ago

What Will happen if the habitats of these plants and animals are destroyed

serious [3.7K]

Answer:

which plants and animals?

Explanation:

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3 years ago

In humans, brown eyes are dominant to blue eyes. If a blue-eyed man has children with a brown-eyed woman whose mother has blue e

nlexa [21]

Answer:

50%

Explanation:

This question involves a gene coding for eye color in humans. The allele for brown eyes (B) are dominant to blue eyes (b). This means that blue-eyed individual will possess genotype: bb.

According to this question, a blue-eyed man (bb) has children with a brown-eyed woman (B_) whose mother has blue eyes (bb). Since the mother of the brown-eyed woman has a blue eye, this means that the woman will be heterozygous for brown eye (Bb).

Hence, the parents in this question will cross as follows: blue eyed man (bb) × brown-eyed woman (Bb). The offspring/children will have the following genotypes (see attached punnet square); Bb, Bb, bb, bb.

Based on the question, 2/4 = 1/2 of the children will be heterozygous for the eye color trait. That is, ½ × 100 = 50%.

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3 years ago

Transpiration is the evaporation process used by plants for cooling and to regulate the amount of water within its body. Factors

Stella [2.4K]

Answer:

Transpiration is the process of water movement in the plant in which water is released from the leaves to the environment in the form of vapours.

The transpiration is important to the plant as:

1. Cooling Effect: Transpiration help lower down the temperature of the plant by evaporating water.

2. The ascent of Sap: leads to the uptake of water in the plant.

3. Removal of Excess Water: removes extra water from the plant.

4. Maintain turgidity: helps maintain turgidity which leads to maintains shape and structure.

5. Photosynthesis: supplies water for the photosynthesis.

The process also has disadvantages to the plants as:

1. Wilting: the excess loss of water causes wilting of leaves during noon.

2. Reduced Yield: the wilting reduces the formation of fruits, flowers and seeds.

3. Wastage of Energy: Loss of water leads to the waste of energy which is used in the conduction of water and absorption.

The climate change has changed the ability of the plants to undergo transpiration and plants has adapted to maintain equilibrium by producing hair, thorns, thick cuticle, sunken stomata, cladodes and phylloclades.

3 0

3 years ago