Answer:
The gradualism model depicts evolution as a slow steady process in which organisms change and develop slowly over time. In contrast, the punctuated equilibrium model depicts evolution as long periods of no evolutionary change followed by rapid periods of change.
Explanation:
Answer:
According to Darwin's theory of evolution, new species evolved as a result of natural selection.
Explanation:
- Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.
- Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.
- The result of Natural selection could be positive,negative or balancing.
- Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.
- Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.
- It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.
Answer:
It looks like there are two main ways to modify humans :)
Explanation:
1. <em>Somatic genetic modification</em> would be the direct way to genetically modify through adding or cutting some of the cells of an existing person usually to alleviate a medical condition (but the results are not hereditary)
<em>2</em><em>.</em><em> </em><em>Germline</em><em> </em><em>genetic</em><em> </em><em>mod</em><em>ification</em> is also a direct way to genetically modify but instead using molecular engineering techniques (this would be hereditary)
