Answer:
It's a form of asexual reproduction!
Development of the offspring happens without fertilization in this type of reproduction.
The two main ways in which parthenogenesis happens is by apomixis or automixis. Through apomixis , the egg cells are produced by mitosis. Through In automixis, egg cells are produced by meiosis.
Mitosis = a part of cell cycle: replicated chromosomes are separated into 2 nuclei
Meiosis = type of cell division that reduces the chromosome number by half. So now there is four haploid cells that are genetically distinct from their parent cell.
Example:
An example of an animal that can use this reproduction is a bonnethead shark! Once a shark had a baby in a tank that only had three females!
(read about that on wikipedia)
Explanation:
blood cells are BICONCAVE DISK in shaped because they lack nucleus
Most likely the outside atoms that are arranged around the central atom. but you didn't really give any answers. so thats my best guess.
Answer:
I would say maybe.
Explanation:
It literally depends on the environments and their surrounding. Also, it can genetic mutations. For example, my friend has greenish hazel eyes while her parents/grandparents don't (btw she's fully asian). This can be due to the environment surrounding her or the cause of genetic mutation. I do feel like genetic mutations are the ones causing us to evolve.
To explain furthermore, the environment can trigger or cause humans to evolve. For example, we all started in Africa, but do you ever wonder how white people became white people? Well, it's because of the cold climate around them. The Africans moved to Europe and stayed there for more than 100 years, and because of that their eyes, skin, lips became lighters.
Lastly, if you have not adapted to the environment around you, there's a good chance mutation and evolving will come along to help humans survive.
