148 results found

Search Results for: egg

Egg

Definition noun, plural: eggs (1) An organic vessel where an embryo develops, and one in which the female of an animal... 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

Egg coat

Egg coat a layer of glycoproteins and other stuff which surrounds an egg (ovum), just outside of the eggs cell membrane. 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

Egg white

Definition ''noun' The white or clear, gelatinous substance surrounding the egg yolk. Supplement The egg white serves to... Read More

Centrolecithal egg

Centrolecithal egg An egg in which the yolk is concentrated near the centre of the egg cell, as is the case in many of the... Read More

Egg polarity gene

Definition noun A maternal gene that encodes for products (mRNA or protein) whose spatial distribution in the egg determines... 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

Egg cell

Definition noun, plural: egg cells (1) Female gamete; female sex cell; female reproductive cell. (2) Unfertilized ovum,... Read More

Eggshell

Eggshell 1. The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell. 2.... Read More

Human Reproduction

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

Human Reproduction and Fertilization

For the human species to continue surviving, it is essential that mature adults are capable of producing fertile offspring... 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

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Developmental Biology

For the human species to continue surviving, it is essential that mature adults are capable of producing fertile offspring,... 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

Reproductive system

Definition noun An organ system that functions primarily for the purpose of reproduction, and is comprised of sex... Read More

Diploid

Diploid Definition Let's first understand the meaning of the word - diploid. From the words ‘di’, meaning "two", and... Read More

Thelytoky

Definition noun A form of parthenogenesis wherein female offspring develops from an unfertilized... Read More

Bryophytes

Bryophytes (nonvascular plants) do not have xylem or phloem. The habitations of this plant group are widely varied and... Read More

Asexual reproduction

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

Zygote

Zygote Definition What is a zygote? A zygote is a fertilized eukaryotic cell. In biology, medical science, and other allied... Read More

Infective stage

Definition noun (parasitology) The stage in the life cycle of an endoparasite wherein it can initiate infection to its... Read More

Microfilaria

Definition noun, plural: microfilariae The embryonic or early larval stage in the life cycle of certain parasitic nematodes... 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

Fallopian tube

Fallopian tube (Science: anatomy) The paired tubes which connect the ovaries to the uterus and conduct the egg to the... Read More

Intermediate host

Intermediate Host Definition When looking at the relationships amongst different biological members of our biosphere, we... Read More

Incompete cleavage

Definition noun (embryology) The partial cleavage in telolecithal or megalecithal eggs in certain animals, such as birds and... Read More

Pseudogamy

Definition noun (1) A form of parthenogenesis wherein the sperm stimulates the egg cell to develop into an embryo without... Read More

Meroblastic cleavage

Definition noun (embryology) The incomplete cleavage in telolecithal or megalecithal eggs of animals, such as birds and... Read More

Angiosperm

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

Fragmentation

Fragmentation Definition What is fragmentation? In general, fragmentation refers to the state or the process of breaking... Read More

Shell

shell 1. A hard outside covering, as of a fruit or an animal. Specifically: The covering, or outside part, of a nut; as, a... Read More

Anchor

Anchor 1. A iron instrument which is attached to a ship by a cable (rope or chain), and which, being cast overboard, lays... Read More

Ovum

Definition noun, plural: ova (1) Female gamete; female sex cell; female reproductive cell. (2) Egg cell. Supplement In... Read More

Seed Plants

There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More

Fecundity

Fecundity Definition The meaning of fecundity is the reproductive rate (fecundity rate) or the performance of an individual... Read More

Mite

Mite Definition What is mite? A mite is a minute arachnid, typically measuring less than 1 mm in length. It belongs to the... Read More

Birth Control and Contraception

Birth Control Some religious beliefs see methods of contraception unethical while some political bodies chose birth control... Read More

Moth

Moth Definition A moth is a lepidopteran insect. Moths belong to the Order Lepidoptera, together with the butterflies.... Read More