65 results found

Search Results for: germ

Germ

Germ 1. (Science: biology) That which is to develop a new individual; as, the germ of a foetus, of a plant or flower, and... Read More

Embryo

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

Triploblastic

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

Germinal

Germinal Pertaining or belonging to a germ; as, the germinal vesicle. (Science: biology) germinal layers, the nucleus of the... 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

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

Phylum

Just like it is easy to identify and sort anything in the supermarkets when placed in the right section with proper display... Read More

Human Reproduction

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

Blastula

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

Pluripotent

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

Embryology

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

Germination

Definition noun, plural: germinations The stage in which a germ or a living thing starts to sprout, grow and... 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

Chorion

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

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

Monoblastic

Definition adjective (1) Pertaining to a condition (especially of a blastula or ovum) in which there is only one primary... Read More

Matrix

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

Chromosome

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

Gametocyte

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

Hypoblast

Definition noun (embryology) The inner (lower) layer of the embryonic disc, located beneath the epiblast Supplement In... 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

Triploblasty

Definition noun (1) A condition of a blastula in which there are three primary germ layers: ectoderm, mesoderm and... Read More

Cytokinesis

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

Epiblast

Definition noun (embryology) The outer (upper) ectodermal layer of the embryonic disc, closer to the amniotic cavity, and... 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

Diploblastic

Definition adjective Pertaining to a condition in which there are two primary germ layers, such as ectoderm and... 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

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

Sertoli cell

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

Tooth bud

Definition noun, plural: tooth buds An undeveloped tooth consisting of aggregates of cells organized in three organs: the... Read More

Oogonium

Definition noun, plural: oogonia (zoology) The diploid female gametogonium that gives rise to primary oocyte through... Read More

Megakaryoblast

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

Chondroblast

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