154 results found

Search Results for: fertilization

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

Fertilization

Definition noun, plural: fertilizations (biology) (1) A process in sexual reproduction that involves the union of male... 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

Apomixis

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

Reproduction

Reproduction Definition Reproduction is a biological phenomenon of producing offspring/s. i.e. more of its kind. Depending... Read More

Embryo

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

Zygote

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

Reproductive system

What is the Reproductive System? The reproductive system of an organism is the biological system made up of all the... Read More

Fertilization membrane

Definition noun The membrane that forms on the inner surface of the vitelline membrane of the ovum after the entry of a... Read More

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of 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

Allogamy

Definition noun (botany) Cross-fertilization, where fertilization occurs when an ovum of a flower is fertilized by the... 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

Automixis

Definition noun (botany) Self-fertilization; a mode of fertilization where fertilization takes place on the flower itself,... Read More

Pollen Grain

What are Pollen Grains? Plants are unique structures and so they carry out mechanisms in special ways. Fertilization in... Read More

Asexual reproduction

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

Fetus

The science of Embryology and Fetal development has fascinated mankind since time immemorial. After the embryonic stage, the... Read More

Angiosperm

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

Hermaphrodite

We all know that typically living organisms are divided into two main categories of sex-based on their biological structure.... 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

Centrosome

Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More

Vascular plants

Definition of Vascular plants The term 'vascular' is derived from the Latin word vāsculum, vās, meaning "a container 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

Fragmentation

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

Diploid

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

Arthropod

Arthropod Definition What is an arthropod? An arthropod is an invertebrate living organism characterized by the presence of... Read More

Cross-pollination

Definition noun (botany) A type of pollination in which the pollen from the anther of a flower is transferred to the stigma... Read More

Amphimixis

Definition noun, plural: amphimixes The union or the fusion of the male and the female gametes during sexual... Read More

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Monospermy

Definition noun The fertilization of an ovum by only one sperm. Supplement The ovum when fertilized by a sperm forms a... Read More

Spermatid

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

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that initially were... Read More

Chorion

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

Law of Independent Assortment

Law of Independent Assortment Definition noun (genetics) Mendelian law stating that for every pair of unit factors, each... 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

Progeny

Progeny Definition Progeny means an unmodified descendant from the material, such as a cell from a cell or an organism from... Read More

Human Reproduction

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

Human development

Definition noun The study of the chronological processes or changes that occur from fertilization to the formation of the... Read More