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worty [1.4K]
3 years ago
15

One important difference between a mylinated and bare axon is _____.

Biology
1 answer:
JulijaS [17]3 years ago
8 0
A myelinated axon has a sheath around it and a bore axon doesn't have it, it's open or exposed so to speak. T<span>he myelin is made up of fat and protein and works like insulation. these axons make up the white matter in the brain since it appears white. The sheath helps to keep the electrical current from leaving the axon and the myelin sheath provides a tract along which regrowth can occur. </span>
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What type of organism is likely to live on a dead tree in a dense forest
allsm [11]

The answer is; raccoons and rodents

Racoon will burrow in the soil or tree logs and form a den where they can litter. When threatened, the raccoon can retreat to its hideout or climb a tree. Rodents also scrawl the bottom of the forest finding food. They also love to burrow or hide in crevices of fallen tree trumps or rocks.


6 0
3 years ago
What is the probability that a cross between a true-breeding pea plant with spherical seeds and a true-breeding pea plant with w
notsponge [240]

Answer:

1 or 100%

Explanation:

Let the allele for seed shape be represented by S.

True breeding spherical shape seeded pea plant will have SS as genotype

True breeding pea plant with wrinkled seeds will have ss as genotype

Crossing the two:     SS  x   ss

Progeny: Ss, Ss, Ss, Ss

Based on the assumption that spherical shape allele is dominant over wrinkle shape allele, all the F1 offspring will have spherical seeds.

<em>Hence, the probability is 1 or 100%</em>

5 0
3 years ago
Which would least likely be a cause of natural selection?
AnnZ [28]
Evolution would least likely be a cause of natural selection.
Natural selection has to do with the survival of the fittest. Therefore, adaptation, variation, and overpopulation all have an impact on natural selection - those who do not adapt to their new surroundings due to overpopulation or those whose bodies have not modified enough will not survive.
7 0
3 years ago
Read 2 more answers
In plants, the reproductive structure that produces pollen and seeds is the __________.
sladkih [1.3K]
In plants the reproductive structure that produces pollen and seeds is the xylem is the answer
8 0
2 years ago
What is least likely to be an example of a variation within a species ?
Ket [755]

Answer:

Option D,  Number of limbs

Explanation:

Options for the question

a. Birth weight

b. Hair color

c. Number of offspring

d. Number of limbs

Solution

Variation within a species is caused due to genetic differences governed by varying allele frequencies and duet to environmental factors that somewhere effect the expression of the genetic potentials thereby causing phenotypic variation.  

Number of limbs is a physical characteristics, very unlikely governed by genetic variation. While factors such as hair color (grey, black, white etc.), height (tall, short, medium) etc. are governed by genetic variation as a result of which they have several phenotypic variations.

Hence, option D is correct

7 0
3 years ago
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