what is the signification of reproduction
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Answer:
Reproduction is the only way to ensure that their kind survives and flourishes on the planet! Reproduction is the process by which organisms give rise to offspring. It is one of the defining characteristics of living things.
Continuity of Species
Some organisms look and act exactly like their parent(s). Others share many similar traits, but they are unique individuals. Some species have two parents, whereas others have just one. How an organism reproduces determines the amount of similarity the organism will have to its parent or parents. There are two basic types of reproduction: asexual reproduction and sexual reproduction. Each of these processes ensures that the parental generation gives genetic material, DNA, to its offspring.
Sexual reproduction is combining genetic material from two parents, usually from two gametes. How the two cells combine may take many forms, but does not necessarily involve physical contact. Sexual reproduction produces offspring that are genetically distinct from other offspring and from their parents. Asexual reproduction produces offspring from just one parent. These offspring are genetically identical to that one parent.
The process of cell division is how multicellular organisms grow and repair themselves. It is also how many organisms produce offspring. For many single-celled organisms, asexual reproduction is a similar process. The parent cell simply divides to form two daughter cells that are identical to the parent. Asexual reproduction produces offspring that are genetically identical to the parent, whereas sexual reproduction produces similar but genetically unique, offspring. In sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote, see Figure below.
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Answer:
Given a random variable, we often compute the expectation and variance, two important summary statistics. The expectation describes the average value and the variance describes the spread (amount of variability) around the expectation.