Search Results for: female
Hermaphrodite
We all know that typically living organisms are divided into two main categories of sex-based on their biological structure.... Read More
Sexual selection
What is Sexual Selection? The definition of sexual selection is very interesting in biological terms. The sexual selection... 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
Reproductive system
What is the Reproductive System? The reproductive system of an organism is the biological system made up of all the... 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
Sex-linked trait
Definition of Sex-Linked Traits A sex-linked trait is an observable characteristic of an organism that is influenced by the... 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
Asexual reproduction
Asexual Reproduction Definition What is asexual reproduction? Asexual reproduction is a type of reproduction that does not... Read More
Human Reproduction
Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More
On Mate Selection Evolution: Are intelligent males more attractive?
A study published in Science on January 11 seems to be the first to lay empirical evidence that concur with Charles Darwin's... Read More
Angiosperm
Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More
Reproduction
Reproduction Definition Reproduction is a biological phenomenon of producing offspring/s. i.e. more of its kind. Depending... Read More
The Amazing Spider Dads
Humans are not the only fathers capable of giving it all for the sake of their progeny. The animal kingdom is teeming with... Read More
Sex Reversal – When Males Grew Ovaries Instead of Testes
Summary: Sex reversal is not unusual in some animals, especially in invertebrates. As for the vertebrates, there are... Read More
Follicle-stimulating hormone
Follicle Stimulating Hormone Definition In the pituitary gland of the brain, gonadotropic hormones are released.... Read More
Sporophyte
Sporophyte Definition What is a sporophyte? Accordingly, the sporophyte is the plant generation that produces spores. To... Read More
Genotypic ratio
Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... Read More
Gynaecophore
Definition noun, plural: gynecophores A receptacle, often in the ventral body, of certain adult male animals (dioecious... Read More
Embryology
Embryology Definition Embryology is a branch of biology that deals with the topics concerning gamete formation... Read More
SENI Biometric Analysis on the extinct Scincidae species: Macroscincus coctei (underlined)
Brian L. Schnirel Leeway Corucia Research Center (LCRC) Courtesy: Polyphemos (2004) Introduction: It has been... Read More
Y chromosome
Y chromosome Definition The Y chromosome constitutes one member of the pair of sex chromosomes within an organism, a common... Read More
Wuchereria bancrofti
Definition A species of the family Onchocercidae that infects the lymphatic system and causes lymphatic... 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
Haplodiploidy
Definition noun A biological system of sex determination as observed in the Hymenopteran species (e.g. ants and bees) where... Read More
Schistosoma
Definition noun (taxonomy) A genus of the Phylum Platyhelminthes that is comprised of parasitic... 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
Enterobius vermicularis
Definition noun Human pinworm that inhabits the rectum of its host Supplement Enterobius vermicularis (formerly Oxyurias... Read More
Sexual dimorphism
Sexual Dimorphism Definition Sexual dimorphism refers to the morphological differences (in form or appearance) between... Read More
Biogenesis
Biogenesis Definition Biogenesis refers to the idea or the process whereby a living thing comes from another living thing,... Read More