Mutations lead to variation which help lead to some traits being more successful

Question

Mutations lead to variation which help lead to some traits being more successful than others and this leads to evolution. However the cost of some mutations slipping by is beings get lethal mutations and die. Unfortunately there is not alternative, yet.

One way to think about it: even if the mutation rate is 10E-9, that mutation rate can be multiplied by all the base pairs and cells in a human body and that rate becomes a big number.

Although I've been aware of how permanent mutations are created and passed along, it's still amusing to entertain the notion that microwaving just one too many plastic boxes or rolling in just enough radioactive waste can curse your bloodline for eternity. Evolution at work.

are these right explanation ? why give a me a reason for each

Explanation / Answer

Variation exists within all populations of organisms contains variation . occurs because in the genome of an individual organism random mutations arise, and these mutations can be passed to offspring . The genomes of individuals interact with their environments Throughout the lives to cause variations in traits. The genome environment includes the molecular biology in the cell, other individuals , populations, as well as the abiotic environment . person with certain variants of the trait may reproduce and survive more than individuals with other, less successful, variants. Thus, the population evolves

studies found less than half the expected number of mutations between these offspring s and parent, an estimated rate of only 1.1 x 10-7 per site . If this lower rate of mutation were to freeze up, it would affect much of our understanding of the chronology of human evolution thats why rate become big number. archaeological sites and Fossils would not change in date, but some hypothesis about their relationships would be challenged.

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