Answer:
Your answer should be C I believe
Answer:
Topoisomerase is an enzyme which participates in the unwinding of DNA helix.
Explanation:
During transcription and DNA replication, the DNA needs to be unwound in order for the transcription/replication machinery to gain access to the DNA so it can be copied or replicate, respectively.
Answer:
As a consequence of the density difference, when active margins of continental crust meet oceanic crust in subduction zones, the oceanic crust is typically subducted back into the mantle.
Explanation:
Answer:
The three processes that increase the genetic variation during the process of meiosis are independent assortment, crossing over, and random fusion of gamete.
During independent assortment, each gene pair assort independently from the other gene pairs in the gametes which brings the different combinations of gene pairs in gamete that cause genetic variation.
Crossing over between homologous chromosomes makes the exchange of genes possible between chromosomes and random fertilization between gametes of two different parents helps in the production of a genetically different offspring. Therefore independent assortment, crossing over and random gamete fusion increase genetic variation during fertilization.
In sexual reproduction there is combination of two different gametes from two different parents which helps in producing an offspring which is genetically different from parents and in asexual reproduction there is no fusion of gamete of different parents and the offsprings are genetically similar to parent therefore in sexual reproduction chances of variation is plenty.