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Stels [109]
3 years ago
13

Speciation _____.

Biology
2 answers:
vichka [17]3 years ago
7 0
2. Speciation can be caused by a decreased gene flow in an ecosystem


Kruka [31]3 years ago
5 0

Answer:

2. is caused by reduced gene flow

Explanation:

Speciation occurs when living organisms develop distinct and unique characteristics due to evolution.

Speciation occurs due geographic migration or movement of species of organisms from one place to another. These species become geographical isolated from each other thereby causing a reduction of gene flow amongst them due to an absence of reproduction.

When these separated species get to their new location , they adapt to the new environment and become distinct species.

We have different types of speciation and they are :

a. Allopatric Speciation

b. Parapatric Speciation

c. Sympatric Speciation

d. Peripatric Speciation

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A) explain what would happen to atp production in a mitochondrion that has "leaky membranes", which would allow protons to diffu
ratelena [41]

B) In the process of the citric cycle that occurs in the mitochondrial matrix, electrons from this chemical pathways move from one protein complex to another and are ultimately accepted by oxygen molecule in the formation a water molecule. Concomitantly, protons are transported to the intermembrane space. Accumulation of H+ ions in the mitochondrial membrane creates an electromotive force that is harnessed by ATP synthase to enable the phosphorylation of an ADP to ATP.


A)     A leaky membrane, therefore, would interfere with the accumulation of protons in the intermembrane space. This will reduce the electromotive force that is harness by the ATP synthase to produce ATP by phosphorylation of ADP. Consequently, this defective mitochondria will produce less ATPs than a healthy mitochondria.







6 0
3 years ago
Which sentence best explains how a positive feedback loop affects climate
meriva

Answer:

A

Explanation:

Based on the word choice and structure of the sentence, A gives off the most positive connotation upon reading out of all of your choices.

Hope this helps!

8 0
3 years ago
Read 2 more answers
What early concept of heredity proposed that genetic information in the form of particles called gemmules travels from different
Contact [7]

Answer:

Pangenesis

Explanation:

The theory of 'pangenesis' was proposed by Darwin to explain the process of inheritance of genetic traits from one generation to next. According to this theory, gemmules are the tiny particles produced by all the somatic cells of the body of living beings. These gemmules are also called pangene. Blood carries gemmules from all the body cells to the gonads. These gemmules from all the somatic cells form germ cells in gonads.

4 0
3 years ago
What disease disables the bodys immune system??
larisa86 [58]
<span>Human immunodeficiency virus or better known as HIV disables the immune system </span>
5 0
3 years ago
Two humans mate who are heterozygous for earlobe shape where attached earlobes (A) are dominant to free earlobes (a), and earwax
MariettaO [177]

Answer:

3/16

Explanation:

This question involves two different genes coding for earlobe shape and earwax quality. The alleles for attached earlobes (A) and wet earwax (E) are dominant over the alleles for free earlobes (a) and dry earwax (e).

According to this question, two humans mate who are heterozygous for both genes i.e. AaEe × AeEe. Each parent will produce the following gametes: AE, Ae, aE, ae.

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

* Attached earlobe, wet earwax (A_E_) = 9/16

* Attached earlobe, dry earwax (A_ee) = 3/16

* Free earlobe, wet earwax (aaE_) = 3/16

* Free earlobe, dry earwax (aaee) = 1/16

Hence, the probability of these parents having their first child with dry earwax (ee) and attached earlobes (A_) i.e. genotype A_ee is 3/16.

7 0
3 years ago
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