Is Exothermic/Endothermic related to Product/Reactant Favored?

1 answer:

6 0

Yes Exothermic and Endothermic are related to the favor of product and reactants.
In Exothermic reactions heat is released because of the formation of bonds. It means Exothermic reactions favor the product and vice versa.

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Which is a phenomenon that can result from directional selection? a. There is an increase in the number of different breeds of d

anzhelika [568]

Answer:

B) There is an increase in the number of giraffes with long necks in areas of Africa where low-growing trees have died

Explanation:

The directional selection is one of the ways of the natural selection in which the natural selection selects or favours the most extreme trait of the species and the extreme trait show higher fitness than the normal or average trait.

In the given question, the case of Giraffe necks shows directional selection as the normal length of the neck is not favoured by the environment but the extreme trait that is long neck is favoured by the environment and the selection shifted to that level.

Thus, Option-B is the correct answer.

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2 years ago

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What is the answer with explaining

pychu [463]

Answer:

All EeWw (100%)

Explanation:

This question involves two genes; one coding for earlobes and the other for hairline. According to the question, one parent is homzygous recessive for earlobe but homzygous dominant for hairline i.e. (eeWW) while the other parent is homzygous dominant for earlobe but homzygous recessive for hairline i.e. (EEww).

The cross between the two parents is as follows: eeWW × EEww. The following gamete combination will be produced by each parent:

eeWW - eW, eW, eW, eW

EEww - Ew, Ew, Ew, Ew

Using this gametes in a punnet square, the following proportion of offsprings will likely be produced:

All EeWw