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natita [175]
2 years ago
9

Describe an environmental factor that could influence natural selection and increase genetic diversity.

Biology
2 answers:
AVprozaik [17]2 years ago
6 0
Due to the effect of bad weather like extreme cold, some organisms cant survive even in the same specie. For example, goats. The goats with thick fur survive because the weather favors them to live on thereby selecting them so the others die off. they reproduce stronger animals with thicker fur of different thickness and colors making the organisms different and better . ..and diversified.
jeyben [28]2 years ago
4 0

Answer:

Explanation:

   Natural selection is the selection of species and organisms in a given region, or even different ecosystems that are in synergy between each other. Other mechanisms of species evolution include genetic drift, gene flow, mutations, and geographic isolation. The basic concept of natural selection is that favorable traits that are hereditary become more common in succeeding generations of a population of reproductive organisms, and that unfavorable traits that are hereditary become less common. Natural selection acts on the phenotype, or observable characteristics of an organism, such that individuals with favorable phenotypes are more likely to survive and reproduce than those with less favorable phenotypes. Gradually, the idea of ​​plurality of existing species was developed and obtained from the evolutionary process, where natural selection prioritized some intraspecific variations through the struggle for survival of the fittest.

  According to increase genetic diversity, we can infer that if a sort of animal species are isolated geographically, they are going to reproduce with by themselves, and then can orign such a new specie as the same specie, with the same characteristcs. In another hand, if you have a genetic drift, a gene flow or a mutation, it can changes throughout the species fenotypes and genotypes. Natural selection can force some populations to change their characteristics - to evolve. However, nothing compared to man-made selection triggered by ecological forces, such as selection under the conditions of environmental pollution.

  To answer and summarize this answer, one factor that may influence natural selection and genetic diversity is climate. However we have a lot of factor that can influence naturak selection and genetic diversity, like the region, the quantite of species are living there and mainly the human beings action.

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In the exercise-depression study by Blumenthal et al. (the SMILE study), which of the treatments had the best success when consi
vodka [1.7K]

Answer:

In the exercise-depression study by Blumenthal et al. (the SMILE study), which of the treatments had the best success when considering the percentage of individuals who had either recovered or at least partially recovered at a 6-month follow-up period? B. Exercise group.

Explanation:

Exercise has different depression-reducing effects. It enables the body to producte endorphins that reduce sensations of pain. Moreover, it changes the  neurotransmitter levels associated with depression (for example, norepinephrine) and it developes a sense of mastery and self-control through regular practice. <em>The SMILE study concludes that aerobic exercise on MDD remission extend the benefits</em> and it might be better than the benefits of antidepressant use.

5 0
2 years ago
2 _______ molecules are needed to start glycolysis.
Vsevolod [243]
The answer would be glucose. 
4 0
3 years ago
Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heart
zlopas [31]

Answer:

SA Node

Inter-nodal Pathways

AV Node

AV Bundle

Bundle Branches

Purkinje Fibers

The SA nodes functions first for setting pace for the heart, then the inter-nodal pathway make link b/w SA and AV node. AV node is site of delay when contraction of atria occurs. AV bundle is the mean of electrical link b/w atria and ventricle. The conveying of impulse to the inter-ventricular septum occurs through bundle branches, while conveying of impulse throughout and along the walls of ventricle occurs through Purkinje fibers.

7 0
3 years ago
A patient with atopic dermatitis has a new prescription for pimecrolimus (Elidel). After teaching the patient about the medicati
Westkost [7]

Answer:

The statement by the patient which indicates that further teaching is needed is:

What to do if I am facing side effects of the drugs?

Explanation:

Atopic dermatitis: It is the most common form of Eczema and appears as red itchy rash on cheeks, arms and legs. Mostly children suffer from it. It is a chronic condition and may be associated with Asthma and Hay fever.

Note: There is no definite treatment for it but different agents (drugs) along with precautions can alleviate the symptoms.

Pimecrolimus:  It is an immunomodulating agent of calcinuerin inhibitor class used for the treatment of atopic dermatitis.

4 0
3 years ago
why would shuffling genetic material to produce new combinations of characteristics be advantageous to a species?
Radda [10]

Answer:

Suffling of genetic material increases genetic variation in offspring which is important for evolution.

Explanation:

Genetic shuffling or genetic recombination helps in the formation of new trait combinations which increase the genetic variation in the population and this genetic variation is very much important for the evolution of species.

In sexual reproduction, the genetic shuffling occurs during the formation of gametes when the two homologous chromosomes exchange their genetic material with each other. This increase variation in gametes.

Fusion of two different gametes in sexual reproduction also helps in increasing the genetic variation in the offspring.

8 0
3 years ago
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