Answer:
d) gene shuffling and mutations.
Explanation:
During meiosis-I, the exchange of genetic segments between the homologous chromosomes occurs. This is called crossing over. The recombinant chromatids formed during crossing over have new combinations of alleles that were otherwise not present in the parental chromatids. Similarly, the random assortment of alleles of different genes towards the opposite poles of the cell during anaphase-I also creates new gene combinations. These events of gene shuffling during meiosis recombine the genetic material and add genetic variations in the progeny.
When genetic material undergoes any random change in its sequence, the corresponding mRNA sequence is also altered. This results in the formation of faulty, nonfunctional, less functional or no protein from the mutated mRNA. Therefore, the sudden changes in DNA called mutations also add variations.
The answer to this question is Speciation
When biogeographic isolation happen, the population of a certain species will be totally isolated (separated) from other species, which cause that population unable to cross-breeds with other species. This will form a unque and special species because that population will always maintain a certain characteristic unlike other population that are forced to cross-breed
Macromolecules. this is the only element found on proteins but not carbs.
Answer:
I think its 2 mass correct me if im wrong but I'm very sure
Answer:
Explanation: The sugar and phosphate group make up the backbone of the DNA double helix, while the bases are located in the middle. A chemical bond between the phosphate group of one nucleotide and the sugar of a neighboring nucleotide holds the backbone together.
