Also, Why is it important that no two animals in nature are alike, even if they're closely related like siblings?
& How do things evolve?
& How do things evolve?
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> What tends to happen to a population if remained unchecked for a period of time?
Exponential growth of the population, until it reaches its carrying capacity, at which point it plateaus.
> Why is it important that no two animals in nature are alike, even if they're closely related like siblings?
False. Bad question. Lots of animals reproduce asexually, producing essentially identical offspring.
Your teacher wants to hear that genetic diversity in a population can keep the population going when the environment is changing -- some fraction of the population is likely to have adaptations that will allow it to reproduce in the new conditions, as opposed to becoming locally extinct.
> How do things evolve?
Populations evolve. New alleles arise through mutation. Allele frequencies in a population change over time (evolution) as a result of
Mutations
Gene flow (formerly known as migration) - individuals immigrating to a population can bring new alleles or even genes with them. Individuals emigrating from a small population can take their uncommon alleles with them.
Genetic drift - chance events can change allele frequencies or remove alleles from the population. Subtopics include founder effect and bottleneck.
Selection - some individuals bear traits that give them a reproductive advantage (or disadvantage) in the local environment. Subtopics include natural selection, artificial selection, mate/sexual selection.
Exponential growth of the population, until it reaches its carrying capacity, at which point it plateaus.
> Why is it important that no two animals in nature are alike, even if they're closely related like siblings?
False. Bad question. Lots of animals reproduce asexually, producing essentially identical offspring.
Your teacher wants to hear that genetic diversity in a population can keep the population going when the environment is changing -- some fraction of the population is likely to have adaptations that will allow it to reproduce in the new conditions, as opposed to becoming locally extinct.
> How do things evolve?
Populations evolve. New alleles arise through mutation. Allele frequencies in a population change over time (evolution) as a result of
Mutations
Gene flow (formerly known as migration) - individuals immigrating to a population can bring new alleles or even genes with them. Individuals emigrating from a small population can take their uncommon alleles with them.
Genetic drift - chance events can change allele frequencies or remove alleles from the population. Subtopics include founder effect and bottleneck.
Selection - some individuals bear traits that give them a reproductive advantage (or disadvantage) in the local environment. Subtopics include natural selection, artificial selection, mate/sexual selection.
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Hi mate,
No two animals are alike because the are born with different genes.If you see twins,you see they look almost the same,but not the exact copy of each other because their DNA is ALMOSt the same,not exactly the same.Like no two humans could share the same finger prints,like that,no two living things can share the same DNA.Clone is completely a different thing.
Things evolve to carry on their species on the planet they are living on.They evolve because of some physical changes in their built to survive.
The survival of the fittest.We can understand from this.
If the population number was not taken,first,we would not be able to know how many people are in a particular country.
Second,we would not be able to find things like the average electricity consumed / average water usage,etc.After that,government,for example,would have trouble for finding the budget for different cities.Resource consuption would not be determined too.
No two animals are alike because the are born with different genes.If you see twins,you see they look almost the same,but not the exact copy of each other because their DNA is ALMOSt the same,not exactly the same.Like no two humans could share the same finger prints,like that,no two living things can share the same DNA.Clone is completely a different thing.
Things evolve to carry on their species on the planet they are living on.They evolve because of some physical changes in their built to survive.
The survival of the fittest.We can understand from this.
If the population number was not taken,first,we would not be able to know how many people are in a particular country.
Second,we would not be able to find things like the average electricity consumed / average water usage,etc.After that,government,for example,would have trouble for finding the budget for different cities.Resource consuption would not be determined too.