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gray wolves variation trait
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What is the organism that carries invisible traits?
genetic variation
What causes varation in traits?
Genotypic variation is caused by mutation. Phenotypic variation can be caused by mutation, which gives rise to different alleles, or it can be caused by environmental factors.
How do helpful variation accumulate in a species over time?
Helpful variations accumulate in a species over time by selecting those traits that allow it to better live in the environment it is in.
What is variation what is a natural selection?
variation is the differences in genotypic traits between individuals in a populationnatural selection is any naturally occurring process resulting in differential success of reproduction of individuals depending on the genotypic traits they have expressed as phenotypic traits, the usual means by which this happens is the death of specific individuals prior to being able to reproduce but other events can alter the rate of success of reproduction without the individuals dying (e.g. they reproduce OK themselves but fail to bring those offspring to reproductive age successfully).
Which exception to Mendelism involves the expression of traits that are controlled by multiple genes?
The exception to Mendelism that involves the expression of traits controlled by multiple genes is called polygenic inheritance. In this type of inheritance, multiple genes contribute to the observable trait, and the trait often shows a continuous variation instead of distinct categories. Examples of polygenic traits include height, skin color, and intelligence.
What causes variation of traits in a population?
the enviroment.
What is the organism that carries invisible traits?
genetic variation
Variation of human skin color is an example of?
polygenic traits
By the end of the twentieth century biological research was demonstrating that about half of the variation in personality traits was due to what?
genetic variation
Why might variation in guppy coloration have developed as trait?
From its enviroment and from traits from their parents.
Why might variation in a guppy coloration have developed as a trait?
From its enviroment and from traits from their parents.
How does sexual production affect a variation?
Many traits are passed half from the mother and half from the father, so this allows strong variation in the offspring
How does the range of phenotype differ between single-gene traits and polygenic traits?
Single gene traits are either one type or another,for example everyone is either (ABO System) group A,B AB or O with no intermediates - this shows discontinuous variation. In polgyenic traits, continuous variation is shown and there is a range with no discrete categories - height
What variations do natural selection depend on?
They depend on natural variation in traits due to mutation.
Can natural selection act on a population with no variation traits?
The trait is the same for all organisms.
What evolves and what does not?
Anything that reproduces with variation of inherited traits evolves. Anything that doesn't doesn't.
What causes varation in traits?
Genotypic variation is caused by mutation. Phenotypic variation can be caused by mutation, which gives rise to different alleles, or it can be caused by environmental factors.
