Mutation

Mutation has changed the allelic frequency. it increases genetic variation within populations and between population.

TLS Online TPP Program

#Id: 8417

#Unit 10. Ecological Principles

Many large mammals, including humans and K selected individuals – Type I curve 

Many birds, small mammals, reptiles and some annual plants – Type II curve 

Many fish and marine invertebrates, r selected individuals - Type III curve

TLS Online TPP Program

#Id: 8418

#Unit 10. Ecological Principles

Survivorship curves generated from static life tables may be easier to construct but they ignore environmental variation and may be slightly less accurate than survivorship curves from cohort life tables.

TLS Online TPP Program

#Id: 8419

#Unit 10. Ecological Principles

The age structure of a population is the proportion of individuals that occurs in different age classes.

TLS Online TPP Program

#Id: 8420

#Unit 10. Ecological Principles

Human population growth fits an exponential pattern

TLS Online TPP Program

#Id: 8421

#Unit 10. Ecological Principles

Human populations can exist at equilibrium densities in one of two ways:

1. High birth and high death rates

2. Low birth and low death rate

TLS Online TPP Program

#Id: 8422

#Unit 10. Ecological Principles

The difference between the birth rate and the death rate determines the rate of natural increase or decrease