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The first generation is created by applying the above rules simultaneously to every cell in the seed, live or dead; births and deaths occur simultaneously, and the discrete moment at which this happens is sometimes called a tick. [nb 1] Each generation is a pure function of the preceding one. The rules continue to be applied repeatedly to ...
In developmental biology, pattern formation refers to the generation of complex organizations of cell fates in space and time. The role of genes in pattern formation is an aspect of morphogenesis, the creation of diverse anatomies from similar genes, now being explored in the science of evolutionary developmental biology or evo-devo.
The frequency of new mutations at a particular locus or in a particular gene, sequence, genome, or organism over a specified period of time, e.g. during a single generation. Mutation rates may be calculated for a specific class of mutation or for all types collectively; they vary widely by organism and with an organism's environment.
Population genetics is a subfield of genetics that deals with genetic differences within and among populations, and is a part of evolutionary biology.Studies in this branch of biology examine such phenomena as adaptation, speciation, and population structure.
Writer Alex Bellos described The Mathematics of Life as "a testament to the versatility of maths and how it is shaping our understanding of the world." [4] Kirkus Reviews called the book "an ingenious overview of biology with emphasis on mathematical ideas—stimulating but requiring careful reading despite the lack of equations."
The word generate comes from the Latin generāre, meaning "to beget". [4] The word generation as a group or cohort in social science signifies the entire body of individuals born and living at about the same time, most of whom are approximately the same age and have similar ideas, problems, and attitudes (e.g., Beat Generation and Lost Generation).
Alternation between a multicellular diploid and a multicellular haploid generation is never encountered in animals. [33] In some animals, there is an alternation between parthenogenic and sexually reproductive phases , for instance in salps and doliolids (class Thaliacea). Both phases are diploid.
For example, rice can be given genes from a maize and a soil bacteria so the rice produces beta-carotene, which the body converts to vitamin A. [19] This can help children with Vitamin A deficiency. Another gene being put into some crops comes from the bacterium Bacillus thuringiensis ; the gene makes a protein that is an insecticide .