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2. Fecundity selection - Wikipedia

   en.wikipedia.org/wiki/Fecundity_selection

   Fecundity selection, also known as fertility selection, is the fitness advantage resulting from selection on traits that increases the number of offspring (i.e. fecundity). [1] Charles Darwin formulated the theory of fecundity selection between 1871 and 1874 to explain the widespread evolution of female-biased sexual size dimorphism (SSD ...

3. Fecundity - Wikipedia

   en.wikipedia.org/wiki/Fecundity

   Fecundity selection builds on that idea. This idea claims that the genetic selection of traits that increase an organism's fecundity is, in turn, advantageous to an organism's fitness. [10] Fecundity Schedule. Fecundity Schedules are data tables that display the patterns of birth amongst individuals of different ages in a population.

4. Mate choice - Wikipedia

   en.wikipedia.org/wiki/Mate_choice

   Mate choice is a major component of sexual selection, another being intrasexual selection. Ideas on sexual selection were first introduced in 1871, by Charles Darwin, then expanded on by Ronald Fisher in 1915. At present, there are five sub mechanisms that explain how mate choice has evolved over time.

5. Bateman's principle - Wikipedia

   en.wikipedia.org/wiki/Bateman's_principle

   In 2013, Fritzsche and Arnqvist tested Bateman's principle by estimating sexual selection between males and females in four seed beetles. They used a unique experimental design that showed sexual selection to be greater in males than in females. In contrast, sexual selection was also shown to be stronger for females in role-reversed species.

6. r/K selection theory - Wikipedia

   en.wikipedia.org/wiki/R/K_selection_theory

   The reproduction of rats follows an r-selection strategy, with many offspring, short gestation, less parental care, and a short time until sexual maturity. The same applies to mice. In r/K selection theory, selective pressures are hypothesised to drive evolution in one of two generalized directions: r - or K-selection. [2]

7. Mammalian reproduction - Wikipedia

   en.wikipedia.org/wiki/Mammalian_reproduction

   Animals, including mammals, produce gametes (sperm and egg) through meiosis in gonads (testicles in males and ovaries in females). Sperm are produced by the process of spermatogenesis and eggs are produced by oogenesis. These processes are outlined in the article gametogenesis.