29 results found

Search Results for: embryos

Embryo

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

Embryology

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

Why Embryonic Stem Cell Use is Unethical

By Maria Victoria Gonzaga Embryonic Stem Cell research offers a remarkable way to treat various disorders where... Read More

Zoology

Zoology Definition Zoology is an ever-evolving branch of Biology dealing with the members of the Kingdom Animalia. It... Read More

Pluripotent

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

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

Mosaic egg

mosaic egg (Science: biology) at one time a distinction was drawn between those organisms in which the egg seemed to have a... 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

Monozygotic twins

Monozygotic Twins Definition Monozygotic twins are twins that developed from a single zygote. Etymologically, the term is... Read More

Intercalary meristem

The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More

Cytokinin

Plants require growth hormones for their regulated growth. Plant growth hormones or regulators (PGRs) are small organic... Read More

Head kidney

Head kidney --> pronephros 1. The definitive excretory organ of primitive fishes. Synonym: head kidney. 2. In the embryos... Read More

Embryo technology

Embryo technology refers to the manipulation of mammalian embryos, for example, cloning, embryo splitting, in vitro... Read More

Apomixis

Apomixis Definition Just like any other organism, the process of reproduction is pivotal to the life cycle of plants. There... Read More

Periderm

Definition noun, plural: periderms (botany) An outer covering that replaces the epidermis of certain plants (embryology)... Read More

Homology

In biology, homology refers to similarities caused by shared ancestry between two structures or genes from distinct species.... Read More

Hypoblast

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

Asexual reproduction

Asexual Reproduction Definition What is asexual reproduction? Asexual reproduction is a type of reproduction that does not... Read More

Taxonomy

Taxonomy Definition The term "taxonomy" was developed from two Greek words, "taxis," meaning arrangement, and "nomia,"... Read More

Stem cell

Definition noun, plural: stem cells (1) An unspecialized cell characterized by the ability to self-renew by mitosis while... Read More

Angiosperm

Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More

Homologous chromosome

A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and... Read More

Recalcitrant

Several words of the English language find wide usage in subjects as diverse as literature, science, social science,... Read More

Twins

Definition noun, singular: twin (1) Two siblings from the same pregnancy and birth (2) (general) Two closely related and... Read More

Vestigial

Vestigial (organ) is a degenerate organ or structure or physical attribute that has little to no function in the species but... Read More

Amphibians & Early Reptiles

Amphibia Definition (Science: zoology) Amphibia is one of the classes of vertebrates. The amphibia are distinguished by... Read More