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  2. Jean Rostand - Wikipedia

    en.wikipedia.org/wiki/Jean_Rostand

    Jean Edmond Cyrus Rostand (30 October 1894 – 4 September 1977) was a French biologist, historian of science, and philosopher.. Active as an experimental biologist, Rostand became famous for his work as a science writer, as well as a philosopher and an activist.

  3. Abeka - Wikipedia

    en.wikipedia.org/wiki/Abeka

    Abeka Book, LLC, known as A Beka Book until 2017, is an American publisher affiliated with Pensacola Christian College (PCC) that produces K-12 curriculum materials that are used by Christian schools and homeschooling families around the world.

  4. Grading systems by country - Wikipedia

    en.wikipedia.org/wiki/Grading_systems_by_country

    Grading scales can be 1 to 8, 1 to 4, or A through G, where A is on a 4.0 scale or on a 5.0 scale. The most common scale is now 1 to 7, with 9 being the highest grade obtained. In addition, degrees are awarded in a Class, depending on the grades received.

  5. Irreducible complexity - Wikipedia

    en.wikipedia.org/wiki/Irreducible_complexity

    Irreducible complexity (IC) is the argument that certain biological systems with multiple interacting parts would not function if one of the parts were removed, so supposedly could not have evolved by successive small modifications from earlier less complex systems through natural selection, which would need all intermediate precursor systems to have been fully functional. [1]

  6. Kleiber's law - Wikipedia

    en.wikipedia.org/wiki/Kleiber's_law

    Kleiber's plot comparing body size to metabolic rate for a variety of species. [1]Kleiber's law, named after Max Kleiber for his biology work in the early 1930s, states, after many observations that, for a vast number of animals, an animal's Basal Metabolic Rate scales to the 3 ⁄ 4 power of the animal's mass.

  7. Price equation - Wikipedia

    en.wikipedia.org/wiki/Price_equation

    Example for a trait under positive selection. The Price equation shows that a change in the average amount of a trait in a population from one generation to the next is determined by the covariance between the amounts of the trait for subpopulation and the fitnesses of the subpopulations, together with the expected change in the amount of the trait value due to fitness, namely ():

  8. Genome size - Wikipedia

    en.wikipedia.org/wiki/Genome_size

    Genome size ranges (in base pairs) of various life forms. Genome size is the total amount of DNA contained within one copy of a single complete genome.It is typically measured in terms of mass in picograms (trillionths or 10 −12 of a gram, abbreviated pg) or less frequently in daltons, or as the total number of nucleotide base pairs, usually in megabases (millions of base pairs, abbreviated ...

  9. Sex-determination system - Wikipedia

    en.wikipedia.org/wiki/Sex-determination_system

    A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. [1] Most organisms that create their offspring using sexual reproduction have two common sexes, males and females , and in other species, there are hermaphrodites , organisms that can function reproductively as either ...

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