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lilavasa [31]
3 years ago
12

3. The two strands of a DNA molecule are held together by...

Biology
1 answer:
Alborosie3 years ago
4 0
The answer is B. Hydrogen Bonds
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Explain how phosphorus runoff into oceans and lakes from farming has a negative impact on the ecosystem.
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It causes eutrophication which means that the algae have too much nutrients and take over the pond, use the oxygen so there is not enough left for marine life, which die as a result.
6 0
4 years ago
Sled dogs have a thick coat of hair that helps them withstand the cold temperatures of the arctic. Compare that adaption to a si
Svetradugi [14.3K]

Answer;

Population; physiological modifications at the individual level.

The adaptation of the sled dog best describes adaptation at the population level while the dog exposed to seasonal colder temperatures has physiological modifications at the individual level.

Explanation;

-The bodies of sled dogs are covered with two coats of hair that work together to provide a double layer of warmth. The under layer is very short and the dog sheds it in the spring to keep from overheating during warmer temperatures.

-During the colder winter months, this under layer works as an insulator against the dog's skin to keep his body warm and his core body temperature consistent. This adaptation best describes adaptation at the population level while the dog exposed to seasonal colder temperatures has physiological modifications at the individual level.

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3 years ago
A woman who has sickle cell anemia passes this disease on to her offspring. This means that the mutation for sickle cell anemia
WITCHER [35]
The mutation will occur on the X chromosome. Males are more susceptible to sickle cell amenia because they only carry one X chromosome instead of two when compared to a set of female chromosomes. If a female only has the mutation on one chromosome the disease will not appear. However, when a male recieves the mutation on the X chromosome, the disease would appear, because they only have one X chromosome.
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3 years ago
Why are genetics important to humans
olganol [36]

Answer:

The importance of human genetic research. ... 13.11 Human genetic research generates knowledge with the potential to improve individual and community health. Research can also reveal information about an individual's susceptibility to disease and hence about the individual's future health.

Explanation:

https://www.alrc.gov.au/publication/essentially-yours-the-protection-of-human-genetic-information-in-australia-alrc-report-96/13-the-regulation-of-human-genetic-research/the-importance-of-human-genetic-research/

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Makovka662 [10]
D. Most organisms have teeth
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