49 results found

Search Results for: germ_cell

Cytokinesis

The cell cycle of eukaryotes is a cyclical series of biological events that certain asexual cells go through. The cell cycle... Read More

Embryo

An embryo refers to the early developmental stage of a multicellular organism that follows fertilization. This stage... Read More

Meiosis

What is Meiosis? A simple definition of meiosis would be is this: meiosis is the process of cell division that results in... Read More

Blastula

Human embryology is a fascinating subject and has succeeded in captivating the attention of human beings for ages.... Read More

First time! Human blood cell turned into a young sex cell

In essence, our body consists of two major types of cells – one group involved directly in reproducing sexually (called... Read More

Pluripotent

Pluripotent Definition What is pluripotent? In biology, the term "pluripotent" means capable of developing into... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Anaphase

In order to keep the process of biological existence ever-going, the phenomenon of cell multiplication is very important.... Read More

Chromosome

Chromosomes Definition Chromosomes are thread-like structures present in the nucleus of plant and animal cells. Chromosomes... Read More

Haploid

In biology, haploid pertains to a condition, a cell, or an organism that has half of the usual complete set of chromosomes... Read More

Spermatogenesis

Spermatogenesis Definition Spermatogenesis is the biological process of producing sperm cells. It occurs in the male gonad... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... Read More

Mutagen

Mutagen Definition What is a mutagen? A mutagen is a substance or agent that causes DNA impairment that results in the... Read More

Apocrine gland

The human body is a complex assemblage of many different organs, systems, glands, bones, and tissues. Weighing any one over... Read More

Totipotent

Totipotent Definition What is totipotent? In general terms, totipotency is defined as the ability of a single cell to... Read More

Prophase I

Organisms all use mitosis to create more cells in the body. Meiosis, a similar process, is used in some organisms to undergo... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More

Matrix

Bodies of living organisms are organized structures. These are organized in a hierarchy of organ systems, organs, tissues,... Read More

Inherited traits

What are Inherited Traits? The characteristics or traits that are passed from parents to offspring are known as inherited... Read More

Chimera

When we learned about the basic genetics of biological life, we came to know that almost all the cells of an individual have... Read More

Pathogen

What are Pathogens? Pathogens are defined as microscopic organisms, including viruses, bacteria, fungi, and parasites that... Read More

Spermatid

Spermatid Definition What are spermatids? Let us define spermatid and understand its role in reproduction. A spermatid... Read More

Naked virus

Viruses are infectious entities with size ranges between 20 to 400 nanometers. The mammoth-sized virus would be about the... Read More

Triploblastic

Triploblastic Definition A triploblastic animal had three main layers of tissue during embryonic development. The central... Read More

Mosaicism

Cells often go through many divisions before they become a part of an organism’s genetic make-up. This leaves room for... Read More

Myoblast

Myoblast Definition A myoblast is a progenitor cell that when it stops dividing enters myogenesis to develop into a myocyte... Read More

Epithelium

An epithelium is a type of animal tissue made up of densely packed cells (called epithelial cells) that rest on a basement... Read More

Simple squamous epithelium

Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More

Embryology

Embryology Definition Embryology is a branch of biology that deals with the topics concerning gamete formation... Read More

Microbe

Microbe Definition What is a microbe? How do we define microbes?  Microbes refer to microorganisms that cannot be seen by... Read More

Gametocyte

Definition noun, plural: gametocytes A gamete-forming diploid germ cell Supplement A gametocyte is a gamete-forming cell.... Read More

Chondroblast

There are two forms of cells in cartilage: chondroblasts and chondrocytes. The chondroblasts are cells that secrete the... Read More

Megakaryoblast

Definition noun, plural: megakaryoblasts A precursor cell that develops into a promegakaryocyte during... Read More

Morphology

Morphology Definition Morphology means the study of the shape and structure of living things from a biological perspective.... Read More

Myeloblast

Definition noun, plural: myeloblasts A precursor cell that gives rise to a promyelocyte during... Read More

Haploidy

Definition noun (genetics) The state of being haploid, that is having half of the set of homologous chromosomes in somatic... Read More

Chorion

Chorion Definition The chorion is a membrane that develops around the developing fertilized egg. It begins to develop... Read More

Sertoli cell

Definition noun, plural: Sertoli cells Any of the elongated cells located in the seminiferous tubules of the testis, and... Read More

Oocyte

Definition noun, plural: oocytes (1) A female gametocyte. (2) A developing female germ cell. Supplement The oocyte is an... Read More