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Mice21 [21]
3 years ago
14

What is an allele?

Biology
2 answers:
kolbaska11 [484]3 years ago
6 0
A. a form of gene
it can be either recessive or dominant
jolli1 [7]3 years ago
5 0

Answer:A) form of gene

Explanation:

An allele is one of the different variants of a gene. It is one of the two or more genes found on the same locus on a chromosome which determines a specific trait in an organism. An allele can be dominant or recessive. A dominant allele is the allele that has the ability to mask the effects of a recessive gene when it is paired with the recessive gene while a recessive lacks the ability to express itself in the presence of a dominant allele. For a recessive allele to express itself, it must occur in a homozygous form.

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Which events can cause an ecological disturbance? Select the three correct answers.
kvasek [131]

A, B and C are the events that will cause an ecological disturbance.

Rationale:

A. Introduction of a new species: When a new specie is introduced, it increases the competition in ecosystem with the native species for food, water, space and shelter. This affects the reproductive success of the native species and thus the dynamics of ecosystem.

B. Climate change: Climate change is different from a simple change of weather. The best example would be of Antarctica where the ice is melting fast due to the global warming. The native species find it harder to adapt to the warm temperatures.

C. Late spring snowstorm: Spring is the season where the plants grow and animals shed their fur. When snowstorms occur in this season they harm these plants and animals that live there.


5 0
3 years ago
What chemical compounds are in a sunflower?​
ASHA 777 [7]

Answer:  The major components of the sunflower seed hull, lipids, proteins and carbohydrates.

Explanation: The major components of the sunflower seed hull, lipids, proteins and carbohydrates were studied Lipids represent 5.17% of the total hull weights, 2.96% of which is wax composed of long chain fatty acids (C14–C28, mainly C20) and fatty alcohols (C12–C30, mainly C22, C24, C26).

Hope This Helps :)

7 0
2 years ago
Shontae was diagnosed with PTSD following her return from a tour in Afghanistan. Due to her repeated nightmares and flashbacks a
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Apple maggots are a type of fly native to North America. Prior to the introduction of the apple tree to North America, apple mag
scoundrel [369]

Answer:

B

Explanation:

B is the most likely consequence because of the following facts we are told:

  • After apple trees were introduced, some apple maggots began feeding from and laying their eggs on apple trees
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This provides a geographical isolation (because they are feeding and laying eggs on separate trees) and reproductive isolation (because they will only mate on the type of tree on which they are born).

These two factors increase the chances that apple maggots feeding on apple trees will only encounter those who have mated on the same tree, and continue to mate this way. Over time, the populations (i.e. apple tree vs hawthorn tree) will intermix less and less. This will mean the genetic pool will become distinct, and natural selection will be acting differently (different habitats and different genes), encouraging speciation.

7 0
3 years ago
Read 2 more answers
Pleaseeeeeee helpppp!!!!!
sergejj [24]

Answer:

D. I.

maybe its D, I think it might be D

3 0
2 years ago
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