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jeka94
3 years ago
5

A. Crossing over decreases genetic diversity

Biology
1 answer:
saw5 [17]3 years ago
5 0

Answer: i beileve it is c ^^

Explanation:

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Explain how body symmetry is related to the phylogeny of animals.
Blizzard [7]

Do not worry so much about the why of classification. Classification is important because it is a lens through which to see what is there. It is not intrinsically true in and of itself. Distinctions are important only as vehicles for a common base of communication. All things have symmetry. A reflection has symmetry. Symmetry means organized life. Organized life is what happens when RNA replicates. It is the difference between chaos and order

4 0
3 years ago
An action potential in an excitatory presynaptic nerve. 2. an _____ in the dendrites of the postsynaptic nerve. 3. this spreads
LUCKY_DIMON [66]
An action potential is an excitatory presynaptic nerve. An EPSP (Excitatory postsynaptic potential) takes place in the dendrites of the postsynaptic nerve. This spreads passively to the axon hillock. Depolarization of this region opens voltage-gated ionic channels. Sufficient membrane depolarization to threshold opens enough to these channels to produce an action potential.
Non myelinated axon; the currents associated with the action potential spread to the depolarized region of the axon.
In myelinated axon; the currents associated with the action potential spread to the next Node of Ranvier.
The action potential travels down the axon to the axon terminals.
6 0
3 years ago
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In your own words. Explain the importance of forests and
iogann1982 [59]

Answer:

The importance of Forests

Explanation:

Forests is important because it is the first and foremost means to effective climatic change which w all depend upon. It also provides us with enormous amount of food and oxygen for survival.

This leads to the importance of forest conservation effort towards sustaining the climate again changes that are harmful to human existence. It also explains the need to conserve the forest as source of fuel, food and medicine among others.

Some of the particular threats to forest in my areas include excess deforestation and the governments effort to plant a tree advocacy and other forms of re-orientation programmes to educate people against consistent hunting that reduces forest life.

7 0
3 years ago
Which of the following best describes a person's genotype?
Illusion [34]

Answer:

<em>The correct option is B) The genes that a person has</em>

Explanation:

Genotype can be described as the genes which are present in a person. The alleles which make up the genes of a person are referred to as the genotype of a person. Hence, option B best describes a person's genotype. The genotype of a person encodes for the different genes which make the mRNA in an organism. These mRNA then make particular proteins in that organism.

In contrast, phenotype depicts the traits which are attributed to a person.

6 0
3 years ago
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What type of level on the food chain are herbivores ?
svlad2 [7]
Above plants
hope this helps    g  
5 0
3 years ago
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