No, brain cells do not undergo meiosis. Meiosis is a process of cell division that produces gametes (sperm and egg cells) with half the number of chromosomes as the parent cell. Brain cells, known as neurons, undergo a different process called mitosis for growth, repair, and maintenance of the brain.
Cells undergo cell division through mitosis, where a cell duplicates its genetic material and splits into two daughter cells. This process allows organisms to grow by increasing the number of cells in their body.
Not all species undergo sexual selection because some species reproduce asexually, or have other mechanisms for mating that do not involve competition for mates based on characteristics that enhance attractiveness, such as physical traits or behaviors. Sexual selection tends to occur in species where there is competition for mates, and those with certain traits are more likely to successfully reproduce.
Plants, algae, and certain bacteria are organisms that undergo photosynthesis. They contain chlorophyll, a pigment that enables them to convert sunlight into energy through the process of photosynthesis.
Prokaryotic cells do not undergo mitosis because they lack a true nucleus and membrane-bound organelles. Instead, they replicate through a process called binary fission, where the DNA is duplicated and the cell divides into two daughter cells.
Matter can be made to undergo nuclear decay in reactors, but it is a process that occurs spontaneously in nature.
No, there is no genetic variation upon which natural selection can operate.
no
The Holocaust camps differed in the ways they treated prisoners after they passed the selection that degrades and dehumanizes them. Sometimes the prisoners were forced to do hard labor and other times they were killed.
Humans do not undergo fermentation, only plants do. Humans undergo through lactate process instead.
If RNA is used as a genetic molecule, passing traits from parent to offspring, then it is subject to natural selection. This only happens in a number of viruses and very few bacteria, though: most organisms use DNA as their genetic molecule.
reproduction
the answer is metamorphosis.
You don't get selected to become a member of elite forces of the US military - you volunteer, then are required to undergo a selection process. In the case of Army Rangers, one would first have to volunteer to transfer to a Tier 1 unit (such as SFOD - D, a.k.a. "Delta Force") and graduate from the selection process.
To breed a cow, a farmer typically introduces a bull to the herd to allow mating to occur naturally. Alternatively, artificial insemination can be used, where sperm from a bull is inserted into the cow's reproductive system to fertilize the egg. After successful breeding, the cow will undergo a gestation period of around 9 months before giving birth to a calf.
Lactose does undergo fermentation when acted upon by lactase-fermenting microbes.
Metamorphosis