Search Results for: reproductive system
Reproductive system
Definition noun An organ system that functions primarily for the purpose of reproduction, and is comprised of sex... 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
Spermatogenesis
Spermatogenesis Definition Spermatogenesis is the biological process of producing sperm cells. It occurs in the male gonad... Read More
Biotic potential
When we look at the different forms of life, we often wonder how they have continued to exist one generation after another.... 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
Natural selection
Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More
Smooth muscle
The smooth muscle can be described as a type of muscle in the human body that is non-striated and involuntary in action.... 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
Human Reproduction
Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More
Fragmentation
Fragmentation Definition What is fragmentation? In general, fragmentation refers to the state or the process of breaking... Read More
Angiosperm
Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More
Follicle-stimulating hormone
Follicle Stimulating Hormone Definition In the pituitary gland of the brain, gonadotropic hormones are released.... Read More
Survival of the fittest
When we talk about evolutionary processes, the usage of the phrase "Survival of the fittest" has been very common in... Read More
Plant cell
Plant Cell Definition A plant cell refers to any cell of a plant. It is the structural and functional unit of plants. Plant... Read More
Allopatric speciation
We can define speciation as a process by which the novel genetically independent group of organisms are formed through the... Read More
Relative fitness
Definition noun A measure of biological fitness wherein the reproductive rate (of a genotype or a phenotype) is relative to... Read More
Simple squamous epithelium
Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More
Darwinian fitness
Definition noun A relative measure of reproductive success of an organism in passing its genes to the next generation's gene... Read More
Imperfect flower
Definition noun, plural: imperfect flowers A flower with only one set of sexual reproductive structures Supplement Flowers... Read More
The Gene Pool and Population Genetics
Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial is about adaptive radiation. Adaptive radiation is... Read More
Asexual reproduction
Asexual Reproduction Definition What is asexual reproduction? Asexual reproduction is a mode of reproduction that does not... Read More
Menstrual cycle
Definition noun The reproductive cycle of human and other animal (e.g. certain primates) females, and is comprised of phases... Read More
Perfect flower
Definition noun, plural: perfect flowers A flower with male and female reproductive parts Supplement Flowers may be... Read More
Reproductive adaptation
reproductive adaptation A peculiarity of the reproductive mechanism of a species that results in it being better fitted to... Read More
Hybridization
Definition noun, plural: hybridizations (reproductive biology) The act or process of mating organisms of different... Read More