During mitosis, the nucleus of the cell replicates so that the new cell that forms will have the same information as the original cell. This is followed by cytokinesis, in which the cytoplasm splits into two new cells. Another type of cell division called meiosis produces cells that form ...
Cells are the basic, fundamental unit of life. So, if we were to break apart an organism to the cellular level, the smallest independent component that we would find would be the cell. Explore the cell notes to know what is a cell, cell definition, cell structure, types and functions of...
CMI comes under the acquired or adaptive type of immune response which means that it is produced in the body only upon exposure to pathogens and then the memory cells are developed. The first contact with a pathogen produces a primary response that is decreased in intensity. Subsequent exposure...
The somatic cells of several protists, algae and fungi have haploid number of chromosomes. Doubling of chromosomes occurs in the zygote but meiosis occurs in it to restore haploid condition. Male Honey Bee is also haploid because it develops parthenogenetically from an unfertilized egg. T...
when a dust enters our trachea or respiratory tract, the cough receptors produces a cough which in turn remove the foreign material from the tract before it reaches the lungs. sneeze: irritation of nasal mucosa in the nose create a sneeze that helps get rid of the foreign particle in the ...
Humans create gametes, sperm, and egg cells, through the process of meiosis. During meiosis, the chromosome number is halved and one copy of each of the homologous chromosomes is randomly distributed to the gametes. During fertilization, the gametes fuse and produce offspring with two copies of ...
During the ripening of the sex cells, both male and female, cell divisions (known asmeiosis) occur that result in each sperm and egg cell having only a single set of chromosomes. In each case the set of chromosomes is complete—i.e., onechromosomeof each kind—but each such set is, ...
Airbornesporescharacterize most nonflowering land plants, such as mosses, liverworts, andferns. Although the spores arise as products ofmeiosis, a cellular event in which the number of chromosomes in the nucleus is halved, such spores areasexualin the sense that they may grow directly into new ...
Sexual reproduction usually involves the process of meiosis, which is a special type of cell division of germ cells to produce gametes. Asexual reproduction, on the other hand, doesn't involve meiosis and produces genetically identical offspring....
it helps in the production of t-cells, functioning of the adaptive immune system and maturity of the thymus. thyroid: it produces hormones that affect the heart rate and how calories are burnt. adrenal : this gland produces the hormones that control the sex drive, cortisol and stress ...