Related Experiment Video

Updated: Aug 14, 2026

Protocol for Production of a Genetic Cross of the Rodent Malaria Parasites
13:39

Protocol for Production of a Genetic Cross of the Rodent Malaria Parasites

Published on: January 3, 2011

Inequalities in the individual reproductive success of parasites

A P Dobson

    Parasitology
    |June 1, 1986
    PubMed

    More Related Videos

    Assessing Differences in Sperm Competitive Ability in Drosophila09:34

    Assessing Differences in Sperm Competitive Ability in Drosophila

    Published on: August 22, 2013

    Studying Inherited Immunity in a Caenorhabditis elegans Model of Microsporidia Infection09:24

    Studying Inherited Immunity in a Caenorhabditis elegans Model of Microsporidia Infection

    Published on: April 6, 2022

    Related Concept Videos

    Inclusive Fitness00:57

    Inclusive Fitness

    Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
    Life Histories01:29

    Life Histories

    Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is represented by two primary reproductive strategies; K-strategists produce few offspring but provide substantial parental support, whereas r-strategists produce much progeny that receives little care. These strategies are related to an organism’s survival likelihood across its lifespan, which is represented by a survivorship curve. Three general types of...
    Energy Budgets and Reproductive Strategies00:51

    Energy Budgets and Reproductive Strategies

    Organisms must balance energy intake with the energy required for growth, maintenance, and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species reproduce only once in their lifetime, often investing most available resources into that single reproductive event. Iteroparous species, by contrast, reproduce multiple times over their lifetimes, typically allocating fewer resources to any single...
    Understanding Species and Reproductive Barriers01:17

    Understanding Species and Reproductive Barriers

    A species is a group of organisms that interbreed and produce fertile offspring. Typically, individuals of the same species appear similar and share common characteristics due to their highly similar genomes. However, not all organisms that look alike are members of the same species. Various mechanisms keep most species discrete. While some mechanisms prevent reproductive behavior and fertilization (pre-zygotic isolation), others prevent the production of fertile offspring after mating has...
    Frequency-dependent Selection01:21

    Frequency-dependent Selection

    When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.Positive Frequency-Dependent SelectionIn positive...
    Natural Selection and Mating Preferences01:06

    Natural Selection and Mating Preferences

    The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
    Females, due to their biological roles in conception, pregnancy, and nursing, inherently...