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3 days ago · Definition. 00:00. …. A gamete is a reproductive cell of an animal or plant. In animals, female gametes are called ova or egg cells, and male gametes are called sperm. Ova and sperm are haploid cells, with each cell carrying only one copy of each chromosome. During fertilization, a sperm and ovum unite to form a new diploid organism.
5 days ago · Female cephalopods lay eggs in clutches; each egg is composed of a protective coat to ensure the safety of the developing embryo when released into the water column. Reproductive strategies differ between cephalopod species. In giant Pacific octopus, large eggs are laid in a den; it will often take several days to lay all of them.
4 days ago · Anthony J.F. Griffiths. Mutation, an alteration in the genetic material (the genome) of a cell of a living organism or of a virus that is more or less permanent and that can be transmitted to the cell’s or the virus’s descendants. The genomes of organisms are all composed of DNA, whereas viral genomes can be of DNA or RNA.
Jun 26, 2024 · Hint: There are two types of reproduction, I)Asexual reproduction and ii) Sexual reproduction. Different organisms do follow different modes of reproduction. Complete Answer: - Fission is the division of a single unit into two or more than two parts and regeneration of those parts to generate separate complete living organisms.
3 days ago · Flowering plant. Angiospermae Lindl. Magnoliophyta Cronquist, Takht. & W.Zimm. [3] Magnolicae Takht. [4] Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae ( / ˌændʒiəˈspərmiː / ), [5] [6] commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass ...
2 days ago · Definition. Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose ...
5 days ago · puberty, in human physiology, the stage or period of life when a child transforms into an adult normally capable of procreation. A brief treatment of puberty follows. ( See also adolescence .) Because of genetic, environmental, and other factors, the timing of puberty varies from person to person and from country to country, but it usually ...
