2.Uniformitarianism is events and catastrophism is changes. 3.relative dating is the age of rocks and geologic features compared with other rocks and features nearby and absolute age is to mean the numerical age. 4. The decay is the process by which an unstable element naturally changes into another element that is stable and dating is one important radioactive isotope used for dating. 5. Superposition is rock layers at the bottom and crosscutting relationship is a rock layer going though another rock layer
The ability to culture stem cells<span> has </span>important <span>implications, as they contain all of the genetic material needed for the formation of every </span>cell<span> type within the body. :)</span>
The correct option is A ie the process whereby non-sister chromatids exchange genetic material
- Between prophase I and metaphase I, a process known as crossing over occurs in which two homologous non-sister chromatids join up and exchange various pieces of genetic material to create two recombinant chromosome sister chromatids.
- When genetic material is switched between two chromosomes, this process is known as crossing over.
- It is in charge of causing genetic variation among members of a species.
- Only the reproductive cells known as gametes undergo this process.
- The steps involved in crossing over are as follows:
1) Synapsis.
2) Chromosome duplication
3) Crossing over.
4) Terminalizataion.
Learn more about crossing over here :
brainly.com/question/20662534
#SPJ10
Answer:
1. Providing structure --> Collagen makes skin strong yet flexible.
2. Maintaining homeostasis --> Insulin controls the concentration of sugar in the blood.
3. Fighting Disease --> IgA prevents the buildup of viruses and bacteria in the gut.
4. regulating chemical reactions --> Pepsin works in the stomach to speed up the breakdown of food.