Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and geneti
c variation. What are two main sources that lead to increased genetic variation? . . Selective breeding . . Gamete mutations . . Recombination . . Genetic drift . . I have looked all in my notes and can't find anything on this topic.
The right answer is Recombination AND Genetic drift
Recombination is an exchange of genetic information (strand of DNA) between two different sectors of the genome. A frequent example is the meiosis between homologous chromosomes (crossing over).
Genetic drift is the evolution of a population or species caused by random phenomena, impossible to predict. From the genetic point of view, it is the modification of the frequency of an allele, or of a genotype, within a population, independently of the mutations, the natural selection and the migrations. Genetic drift is caused by random and unpredictable phenomena, such as the chance of sperm and egg encounters, in the case of sexual reproduction.
"Recombination" and "Genetic drift" are the two main sources among the following choices given in the question that lead to increased genetic variation. The correct options among all the options that are given in the question are the third and the fourth options. I hope the answer has helped you.
I believe the answer should be B) rehabilitation exercises so, After you have rested an injured body part, the next step should be rehabilitation exercises.
The scientist wants to know what type of bases are added to the growing mRNA by the RNA polymerase then it would be bases complementary to the template DNA.
