Answer:
B. 23
Explanation:
The answer is B. 23
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.
simple dominance
codominance
pleiotrophy
Answer: The correct answer is- " Simple dominance".
Simple dominance refers to the expression of one allelic form of a gene (that is dominant) over the other form (that is recessive).
Example- T allele is dominant that represents tall plant height over t (for dwarf), which only expresses in the absence of dominant allele.
On the contrary, pleiotropy means one gene is responsible for more than one characteristic or phenotypic trait of the organism.
Codominance means equal expression of both the alleles (like AB blood group) of a gene. Incomplete dominance occurs when none of the alleles is completely dominant resulting in an intermediate phenotype.
Thus, simple dominance is the right answer.
endoplasmic reticulum
golgi apparatus
cell membrane
a. It was inspired in part by patterns observed in the fossil record.
b. It suggests that subgroups diverge and evolve at about equal and constant rates.
c. It suggests that most species undergo little phenotypic change during most of their evolutionary duration.
d. It proposes that most evolutionary change is concentrated in relatively brief episodes of change.
e. It appears to be well supported by the fossil record.
The following is not true of the punctuated equilibrium theory is ‘It suggests that subgroups diverge and evolve at about equal and constant rates.’ The answer is letter B. the statements ‘It was inspired in part by patterns observed in the fossil record’, ‘It suggests that most species undergo little phenotypic change during most of their evolutionary duration’, ‘It proposes that most evolutionary change is concentrated in relatively brief episodes of change’ and ‘It appears to be well supported by the fossil record’ best supports the punctuated equilibrium theory.
b. Thirty-percent of pollution in the Untied States did not originate in the United States.
c. Air pollution is only a problem in the developing world.
d. Air pollution can lead to poor health.
The statement that describes that air pollution is only a problem in the developing world is false, i.e., option c.
The contamination of the environment can be indoor or outdoor, by any chemical, physical or biological agent that alters the characteristics of the atmosphere which is present naturally is referred to as air pollution.
Its sources can be varying, including household combustion devices, motor vehicles, industrial facilities, and forest fires are common sources of air pollution.
The statement that describes that air pollution is only a problem in the developing world is false as it can be done in the under-developed areas also through various sources including coalcombustion, etc.
Thus, the correct option is c.
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