How can population pass through changes in age structure without changing in size?

Q: how does brain cancer affect carrying capacity, population density and population growth rates?

A: Introduction:- The maximum population that is supported by any environment or ecosystem is known as…

Q: What is the relationship between generation time and the rate of population growth?

A: The increase in cell size and number is called growth. Bacterial growth refers to the increase in…

Q: Human populations have which type of survivorship curve? a. Type I b. Type II c. Type III d. Type IV

A: Answer is a.)  Type I.

Q: How did the population growth curve with many predators compare with normal population growth curve?…

A: Introduction Populations reach the carrying capacity (K) of their environment as competition grows…

Q: What is the key characteristic of a population exhibiting a type Il survivorship curve? large…

A: Survival curve represents the no of organism in a populations survive with respect to their age.…

Q: How will the population of bears change over time?

A: Bears are various types. They are experiencing destruction of their habitat.

Q: what is  population change?

A: The term 'population' can be defined as a group or assemblage of organisms of the same species…

Q: What insights can we gain about population dynamics when we examine fluctuations in age structure?

A: A population may be defined as the sum total of individuals inhabiting a particular region or an…

Q: How does carrying capacity limit the size of a population?

A: Natural resources are present in a limited amount only. There is only a very limited amount of food…

Q: What effect does each of the following have on population size: natality, mortality, immigration,…

A: Step 1 Population ecology is the study of all aspects of the population found in an area and the…

Q: How does a fertility rate above RLF produce positive feedback (in which a change creates a situation…

A: The fertility rate is defined as the maximum number of childbirth per reproductive-age woman.…

Q: What is rapid prolific growth of population known as?

A: The rapid prolific growth of the population is known as the population explosion. It is also…

Q: key factors that led to the changes in the birth rate and death rates as a country goes through the…

A:

Q: Do population growth models apply to humans the same waythey apply to other species?

A: Population growth models are mechanistic models that help in determining the population density and…

Q: how population curve explain the trend in its growth?

A: In ecology, there are two major modes to determine population growth: exponential curve and logistic…

Q: What effect does such a bottleneck have on the future population? Give a brief description of its…

A: The phenomenon where the size of a population is severely reduced is known as bottleneck. This is…

Q: How do disruptive events affect populations and communities

A: Human presence on land and in the water may have a significant impact on ecosystems. Many issues…

Q: What are three examples of density-dependent factors that affect population growth?

A: In ecology, population growth is defined as the increased number of individuals in a given…

Q: describe how population growth is calculated and how the growth rate interacts with population size…

A: The abiotic and the biotic constituents of the biosphere co-exist with each other. Different…

Q: The number of individuals that occur per unit area is calleda. populationb. population growth.c.…

A: Step 1 Population ecology is the study of all aspects of the population found in an area and the…

Q: How can the growth of a population be slowed by its own numbers?

A: Population is defined as the group of organisms that can interbreed and live on same geographical…

Q: Define the concept of Survivorship in Population growth ?

A: The decrease in the death rate (which was faster than the birth rate) and, in particular, an…

Q: What is an example of population

A: In ecology a population is defined as a group or set of individuals inhabiting an isolated area , of…

Q: What do you mean by population density?

A: Population is a group of organisms of a species sharing a common habitat at a given time. Characters…

Q: What controls changes in population size?

A: Population size is the number of individuals in  a population. The population size of an habitat can…

Q: What questions should you ask to determine wether a population has passed through a demographic…

A: When you should ask to determine whether a population has passed through a demographic transition in…

Q: What is population growth rate?

A: Population is defined as the number of inhabitants of a certain region. It involves the process of…

Q: Describe the three types of survivorship curves and relate them to specific populations

A: There are three types of survivorship curves : Type 1, type 2, type 3.

Q: Give an example of founder effect in the human population

A: The founder effect is the reduction in genetic variation that results when a small subset of a large…

Q: Briefly explain how each demographic parameter can affect a population. This can be in terms of…

A: Population is a reproductively interactive group of animals of a single species. A few individuals…

Q: What is the relationship between population growth and environment?

A: Ans: Population growth: Population growth is defined as an increase in the number of individuals of…

Q: In which stage of the demographic transition does population increase the most?

A: Demography refers to study of human population in statistical terms. It includes births (fertility),…

Q: How does population affect the quality of living in a particular area?

A: Environmental science is one of the sciences that we must learn that every living thing on this…

Q: What are the main factors that affects the growth of A population?

A: Population may be defined as the collection or the group of individuals that belong to the same…

Q: How does natural increase, natural decrease, equilibrium affects or influence the population and…

A: Typically, population refers to the number of people in a certain place, such as a city or town,…

Q: Describe the characteristics of populations that help predict population growth

A: In ecology field, the study of living organisms takes place at different levels. The population…

Q: Why is education an important component for population control.

A: At a given time in a particular area, the total number of individuals of a species is termed as…

Q: How does population density affect the physiology and behavior of organisms?

A: In nature, there are various constraints on population number and expansion. Some are depending on…

Q: What is the difference between a population and community

A: A community is a set of populations of living beings that live in the same region and interact with…

Q: What is population density?

A: Population refers to the group of the individuals that are occupying a particular space.  They…

Q: How is growth of population represented?

A: Species: Species mean the group of closely related organisms. They can interbreed and produce…

Q: How will you measure population density in following cases?(i) fish in a lake(ii) tiger census in a…

A: Population refers to all the organisms of the same group or species that live in a particular area…

Q: In a type 3 survivorship curve, which group has the highest mortality? O very old O middle age all…

A: They number of surviving individuals of a particular age are plotted in the survivorship curve.

Q: Describe three demographic factors that can influence the age structure  of a population.

A: Demographics means the statistical factors which have influence on the growth or decline of…

Q: Describe the three types of population pyramids and their effect on society due to their…

A: Whenever examining the groups divided by age and gender, population pyramids are useful diagrams for…

Q: How does the shape of age pyramid reflect the growth status of a population?

A: The shape of age pyramid reflects the growth status of a population whether it is stable, growing,…

Gene Flow

Gene flow, also known as gene migration, is the introduction of genetic material from a particular population to another population of the same species through interbreeding. For example, a bee facilitates its reproductive process by carrying pollen from one flower to another. The flow alters the composition of the gene pool of the receiving population. It introduces new alleles within the population and helps increase variability. This exchange of genetic material occurs through reproduction and brings about new combinations of traits into the population. Where human beings are concerned, actual migration of populations, whether voluntary or forced, brings about gene flow.  

Population Biology

Population biology is the study of patterns in organism populations, specifically the growth and management of population size, population genetics, the evolution of life history, species interactions, and demography.

Speciation

The process of speciation involves the formation of new species during evolution. The new species evolve in such a way that both new and old species are not able to interbreed. Thus, speciation occurs when few members of one species get separated from the main species due to geographical, mechanical, or reproductive isolation. These separated members develop new traits that make them different from the main species. In other words, speciation could be defined as the absence of gene flow between two populations that become new species. 

Allele Fixation

A gene is a unit of heredity and contains both physical and functional information that shapes an individual. Genes are made up of DNA (deoxyribonucleic acid), which carry genetic information from one generation to another, from one set of parents to their offspring, and so on. Every cell in a human body, or any living organism, has the same DNA, which implies that every cell in an individual’s body has all the information it needs to build and sustain the body!