HARITHA,SUBJECT MATTER EXPERT at Edumarz
Solution:The different ways include processes like natural selection, genetic drift, mutations, variations and sexual selection
Natural selection
The process of natural selection first explained by Charles Darwin
https://unsplash.com/s/photos/charles-darwin
Natural selection is the process that occurs naturally in which organisms adapt to their environment and survive.
This also increases the number of offspring produced by organisms
Genetic drift
It is the changes in allele frequencies in a population
It happens in small populations by chance
The effects caused by genetic drift are strong.
Mutations
It is the sudden inheritable changes happen in a population
Mutations cause alterations in the sequences of DNA
It is very essential for evolutionary processes
It happens in a very short time and the effects are strong
https://unsplash.com/s/photos/mutation-in-dna
Variations
Variations are mostly seen in sexually reproducing organisms.In sexual reproduction, DNA copying occurs from both male and female parents, and thus variations pass from parents to their children. In the asexual mode of reproduction, only a single parent is involved
In sexually reproducing organisms,variations occur mainly by genetic recombination and mutations
Sexual selection
It is the process by which an organism chooses mates for reproduction
Selection of sexes occurs among the same species or with other species
This also increases reproductive output