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irga5000 [103]
3 years ago
15

In about 90% of cases, Huntington’s disease is inherited. But in 10% of cases, there is no evidence that a parent has the diseas

e. Why do you think this is the case?
Biology
2 answers:
I am Lyosha [343]3 years ago
7 0
They weren't passed down with those genes
Nutka1998 [239]3 years ago
6 0

New mutations can also occur randomly, so there’s a chance that children of parents who didn’t inherit the gene for Huntington’s can develop a mutation in the gene that causes Huntington’s disease.

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Why are protozoan not classified as bacteria?
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Protozoa are Eukaryotic organisms, they show animal/plant like behaviors. Bacteria are prokaryotic, very tiny simple single celled organisms with no nucleus or mitochondria.
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in guinea pigs the aelle for short hair is dominant to long hair in a punnet square show a cross between a heterozygous dominant
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Answer:

Punnet squares are in the image attached

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Which organisms are likely to be found in the level labeled 4 in this diagram? Select the two correct answers.
andrey2020 [161]
The presented picture shows 4 trophic levels of the ecosystem.
The first level is made out of primary producers, plants. The second level is made out of herbivores that feed on the plants. The third level is made out of predators that eat herbivores.
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8 0
3 years ago
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What is most likely the identity of the biome, and why?
Dafna1 [17]

Answer:

The primary factor which determines a biome is the climate. Temperature and precipitation essentially determines what kind of growing season or soil quality the terrain may have,which therefore affects the growth of plants living there.

Other factors may include: humidity, pollution (such as air, noise...), daylight intensity

Explanation:

6 0
2 years ago
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Which method best helps to prevent wind erosion?
mr Goodwill [35]

Answer:

Growing more vegetation

Explanation:

Soil erosion by wind occurs anywhere when vegetation and climatic conditions are conducive. These conditions include presence of very strong winds and when the soil is loose, dry, and is composed of fine granulated particles.

It also occurs when the soil surface is relatively smooth and there is sparse or no vegetative. It can also occur where there are large fields with no windbreak mechanisms in place.

The best way to reduce wind erosion is to keep the wind off the soil surface by covering the soil surface. This involves growing of more vegetation, either cash crops or cover crops which serves to protect the soil and keep the winds higher off the surface.

Also trees can be planted around the farms to serve as wind breaks which breaks or reduces the force of the winds.

Also, soil compaction which is the process of increasing the density of soil by packing the soil particles closer together causing a reduction in the volume of air can help to prevent wind erosion.

From the given options above, the best option would be growing more vegetation.

Practicing crop rotation serves to preserve soil nutrients and prevent diseases.

Decreasing riverbank slopes prevents erosion by water.

Avoiding soil compaction would lead to more erosion by wind.

4 0
3 years ago
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