Answer:
Mutation, Gene flow/Migration/Immigration of gene and Recombination
Explanation:
For any species there are majorly three sources of genetic variations –
a) Mutation – This leads to change in the genetic code with in the DNA of an organism. Sometimes mutation does not produce any effect on the organism. Mutation can produce both positive and negative impact. Its effect is observed in long run as its rate is slow.
b) Recombination – When an organism undergoes sex, his/her genes recombine with the genes of mating partner. The rate of recombination is faster than the rate of mutation
c) Gene flow /Migration/Immigration of gene – In this gene travel from one set of population to the other. The frequency of gene in the mixed population lies between the original population gene frequency and the migrated or donor population gene frequency
Answer:
Option B
Explanation:
Artificial selection is influencing of inheritance of any trait . in this limited options are given to allow a species to mate and produce offspring
In genetic code editing directly genes are edited.
Hence, option B is correct
Answer:
These injuries occur from a big accident.
Explanation:
I conclude that the person received these injuries from a big accident because the individual has many broken bones and this will happen only when a person experience a big accident such as hit by the truck or car etc. It is also possible that the person was killed by someone and before killing he beat the individual very badly as a result its bones were broken.
Answer: DHT is an androgen and helps give males their male characteristics. DHT is thought to cause hair follicles to miniaturize, and this contributes to male pattern hair loss. By the age of 50 years, over half of the men in the U.S. will probably experience hair loss mediated by DHT.
