Rates

Net reproduction rate

In population ecology and demography, the net reproduction rate, R0, is the average number of offspring (often specifically daughters) that would be born to a female if she passed through her lifetime conforming to the age-specific fertility and mortality rates of a given year. This rate is similar to the gross reproduction rate but takes into account that some females will die before completing their childbearing years. An R0 of one means that each generation of mothers is having exactly enough daughters to replace themselves in the population. If the R0 is less than one, the reproductive performance of the population is below replacement level. The R0 is particularly relevant where sex ratios at birth are significantly affected by the use of reproductive technologies, or where life expectancy is low. The current (2015–20) estimate for the R0 worldwide under the UN's medium variant model is 1.09 daughters per woman. (Wikipedia).

Video thumbnail

Overview of Meiosis | Don't Memorise

Every organism adds new individuals in their population by the process of Reproduction. We know that organisms reproduce by two methods that are Asexual and Sexual! Asexual Reproduction is performed by “Mitosis”. Any guesses how sexually reproducing organisms increase their population? I

From playlist Biology

Video thumbnail

Exponential Growth Rates (1 of 2: Instantaneous)

More resources available at www.misterwootube.com

From playlist Rates of Change

Video thumbnail

21. Global Demography of Abortion

Global Problems of Population Growth (MCDB 150) Abortion is very common: worldwide, and in the US, there is 1 abortion for every 3.2 live births. In places where contraception is not used, abortion is used as birth control. Neither legal nor religious proscriptions have a strong effect

From playlist Global Problems of Population Growth with Robert Wyman

Video thumbnail

André M. de Roos: On the relevance and irrelevance of dynamic energy budget models for ...

Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b

From playlist Dynamical Systems and Ordinary Differential Equations

Video thumbnail

Ex: Exponential Growth Application - Predicting World Population

This video provides an example of how to write exponential function and make a prediction about population when given the population of a given year with the annual growth rate. http:/mathispower4u.com

From playlist Solving Applications of Exponential Growth and Decay

Video thumbnail

Asexual Reproduction

Watch more videos on http://www.brightstorm.com/science/biology

From playlist Biology

Video thumbnail

What Are Breasts Really For?

Check us out on iTunes! http://dne.ws/1NixUds Please Subscribe! http://testu.be/1FjtHn5 Breasts are for feeding our young but there's another persistent theory that breasts play a larger role in attracting a male counterpart. + + + + + + + + Previous Series: The Birth And De

From playlist Breasts: What They Do, Why We Have Them, And How They Can Change Your Life

Video thumbnail

Polygenic Local Adaptation in Subdivided Populations: Effects of LD and Drift by Himani Sachdeva

PROGRAM FIFTH BANGALORE SCHOOL ON POPULATION GENETICS AND EVOLUTION (ONLINE) ORGANIZERS: Deepa Agashe (NCBS, India) and Kavita Jain (JNCASR, India) DATE: 17 January 2022 to 28 January 2022 VENUE: Online No living organism escapes evolutionary change, and evolutionary biology thus conn

From playlist Fifth Bangalore School on Population Genetics and Evolution (ONLINE) 2022

Video thumbnail

Some Equations and Games in Evolutionary Biology - Christine Taylor

Some Equations and Games in Evolutionary Biology Christine Taylor Harvard University; Member, School of Mathematics February 14, 2011 The basic ingredients of Darwinian evolution, selection and mutation, are very well described by simple mathematical models. In 1973, John Maynard Smith lin

From playlist Mathematics

Video thumbnail

Mod-01 Lec-16 'Natural Order' and the market: Quesney and Galiani

History of Economic Theory by Dr. Shivakumar, Department of Humanities and Social Sciences IIT Madras, For more details on NPTEL visit http://nptel.iitm.ac.in

From playlist IIT Madras: History of Economic Theory | CosmoLearning.org Economics

Video thumbnail

1.2 - Evolutionary Thinking: Random Evolution, The Role of Chance

"Evolutionary Medicine" Sinauer Associates (2015) is the textbook that supports these lectures. Instructors can request examination copies and sign up to download figures here: http://www.sinauer.com/catalog/medical/evolutionary-medicine.html

From playlist Evolution and Medicine (2015) with Stephen Stearns

Video thumbnail

What Is Asexual Reproduction | Genetics | Biology | FuseSchool

What Is Asexual Reproduction | Genetics | Biology | FuseSchool Asexual reproduction only needs one parent; all the offspring are clones. This means they are genetically identical to one another and to the parent. Many plants use asexual reproduction, like spider plants. Bacteria also rep

From playlist BIOLOGY: Genetics

Video thumbnail

Levels of selection (3), the evolution of sex.

This video looks at the evolution of sexual reproduction and the reason for its widespread occurrence despite the "two-fold cost" associated with it. Three advantages of sex are identified: production of increased variation in offspring, increased rate of population evolution, and the redu

From playlist TAMU: Bio 312 - Evolution | CosmoLearning Biology

Video thumbnail

The Future of Human Evolution | What Darwin Didn't Know

Thanks to currently-existing technology and medicine, future humans could have larger heads and extensive robotic implants. In other words, evolution could be handed over from nature to science. Consult some old sci-fi novels and grab your art supplies; that classic "monkey-to-human evolut

From playlist Biology and Health

Video thumbnail

HSC EES Module 8 Overharvesting

HSC Earth and Environmental Science Module 8 Resource Management Sustainability Overharvesting

From playlist Y12 EES Mod 8 Resource Management

Video thumbnail

What is Natural Selection (and why it is not 'survival of the fittest')? by Amitabh Joshi

Kaapi with Kuriosity What is Natural Selection (and why it is not 'survival of the fittest')? Speaker: Amitabh Joshi (JNCASR, Bengaluru) When: 4:00 pm to 5:30 pm Sunday, 26 March 2023 Where: Jawaharlal Nehru Planetarium, Bengaluru Abstract: The term 'natural

From playlist Kaapi With Kuriosity (A Monthly Public Lecture Series)

Video thumbnail

ALL of Edexcel IGCSE Biology 9-1 | PAPER 2 | IGCSE Biology Revision | SCIENCE WITH HAZEL

To sign up for my 2023 Easter Online Revision Courses visit https://swhlearning.co.uk/revision-courses/ SwH Learning's Perfect Answer Revision Guides are available at https://swhlearning.co.uk TOPIC TIMINGS: **Topics marked with a * contain content that appears on paper 2 only** Cells 0

From playlist Complete Edexcel IGCSE (9-1) Triple Award Science Videos //

Video thumbnail

Statistics: Ch 7 Sample Variability (3 of 14) The Inference of the Sample Distribution

Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn if the number of samples is greater than or equal to 25 then: 1) the distribution of the sample means is a normal distr

From playlist STATISTICS CH 7 SAMPLE VARIABILILTY

Related pages

Population ecology | Demography | Total fertility rate