Arresting the division enables the egg to obtain all the resources it would possibly need. During the first arrest stage... View Article
Female gametogenesis or oogenesis produces mature eggs. Only one egg is produced from 4 haploid cells as a result of... View Article
Oogenesis involves one mitosis and half meiosis. However, when oogenesis is followed by fertilization, then one mitosis and one meiosis... View Article
During oogenesis, the reason for arresting an egg at meiosis I is halving the number of chromosomes in a cell,... View Article
Meiosis I is a reductional division causing the reduction of chromosomes by half while meiosis II is an equational division.... View Article
23 chromosomes. Spermatids are haploid, consisting of 23 chromosomes. Spermatids undergo spermiogenesis to become mature spermatozoa. Learn more: Spermatogenesis Is... View Article
A diploid parent cell has two copies of each chromosome. It undergoes meiosis during which one round of DNA replication... View Article
Cytoplasm that is not required anymore is either disposed of in the lumen of tubules or phagocytized by cells of... View Article
Through the process of spermatogenesis, haploid spermatozoa develop in the seminiferous tubules of the testis from germ cells. At birth,... View Article
Spermatogenesis gives rise to spermatids (n) from spermatogonia (2n). The metamorphosis of spermatids into sperm is spermiogenesis. The sequence of... View Article
LH, FSH, and testosterone all indirectly or directly trigger testosterone secretion and the process of spermatogenesis. In this process, haploid... View Article
Spermatogenesis is initiated in the male testis on the onset of puberty. The reason why spermatogenesis does not take place... View Article
The two types of active transport are – Primary active transport Secondary active transport See more: Active transport What Is... View Article
Enzymes are said to be denatured when they are not active any more and cannot function. Important influences on the... View Article
Two functions of cell membrane are – Serves as a barrier separating the cell constituents from the unwanted substances Selectively... View Article
Prokaryotes are single celled, microscopic entities. They neither have specialized organelles nor a prominent nucleus with a membrane. Examples of... View Article
Two examples of osmosis are – Kidney dialysis Roots absorbing minerals and water from the soil Raisin swells when kept... View Article
Fungi are non-vascular, eukaryotes, non-motile and heterotrophic organisms. Examples of fungi are rusts, yeasts, molds, stinkhorns, truffles, and mushrooms. Also... View Article
Two Characteristics Of Protists are – They are eukaryotes, and can be parasites They locomote using cilia and flagella. A... View Article
Two characteristics of flowering plants are – Flowering plants have tiny pollen grains which disperse genetic information from one to... View Article
