Answer:
B
Explanation:
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Charles Darwin observed that the accumulation of gradual changes in a population leads to a new species over time.
Further Explanation:
Scientific experimentations are the logical and practical procedures that determine the efficiency of a particular claim using scientific means. Charles Darwin was the one who gives the theory of evolution that occurred by natural selection. According to Darwin, evolution was descent with modification. There is a common ancestor between the species that changed over time and became new species. Natural selection is the reason why the population grows adapted for well suited to the environment over time.
The pre-existing heritable variation in the group is the prime condition for natural selection to happen in the environment between the species. Natural selection is the process by which the well-suited organism in the population gets selected due to stress in the atmosphere thus evolving the species. In Darwin's book ‘The Origin of Species’, all these facts and information are mentioned, and the ideas of evolution and natural selection are well-reflected.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Ecology
Keywords:
Darwin’s book, origin, natural selection, facts, species, modification, evolving, heritable, variation, ancestor, group, scientific experimentation, practical procedure.
Answer:
begin with a single parent cell which eventually splits to form new daughter cells.
Explanation:
Ans. Mitosis.
Mitosis is a process of cell division, which involves formation of two daughter cells from a parent cell having same genetic constitution as present in parent cell. It plays role in growth, development, and repairing of damage tissue.
After fertilization, a diploid, single-celled zygote is formed, which goes for mitosis, make thousands of cells and develops into fetus, which later develops into an adult animal.
Thus, the mechanism by which a diploid animal grows after fertilization is 'mitosis.'