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Variation of a species can come about in many ways, but mutation is the major cause of variation in a species.
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∙ 12y ago
Wiki User
∙ 12y agoSexual Reproduction
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The great variety of possible gene combinations in a sexually reproducing species is due in part to the?
Recombination, or crossing over, is the process by which homologous chromosomes exchange genetic material during meiosis. This creates gametes with many different combinations of alleles, and is a major source of genetic variation in sexually reproducing species.
What are 3 causes of variation within a population?
Changes within a gene pool occurring from generation to generation is called microevolution. Allele frequencies in a population may change due to gene flow, genetic drift, natural selection and mutation. These are referred to as the four fundamental forces of evolution. Only mutation can create new genetic variation...the other three forces simply rearrange this variation within and among populations.
What is keystone species?
Keystone species are those which play a major role in determining which species exist in a particularcommunity. They are critical factors in ecological processes such as energy flow and nutrient cycling.If we can identify a keystone species and quantify its impact on its community then we can usually understand how the community functions as a whole. The importance of these species is such that their loss from a community may bring about a cascade of other species extinctions. Often a keystone species is not recognised until it is wiped out and many other species which were dependant upon it disappear also.
Which of these is the major difference between asexual and sexual reproduction in sea stars?
There is genetic variation in the sea stars as a result of sexual reproduction.
What major legislation passed in 1973 primarily protects biodiversity?
the endangered species act
What is the major cause of variation within species?
sexual reproduction is the major cause of variations within a specie
What does intermediate traits mean?
a measurable trait in which there is some evidence of the operation of a simple major cause, but in which the variation within the putative categories is such as to cause overlap and hence ambiguity in classification of any particular reading.
One of the major elements of natural selection is that all?
All species have genetic variation. ;D
True or false The loss of a species from an ecosystem usually has no effect because of the presence of other species in the ecosystem?
Loss of one species from a community has a large effect. This is because this can cause major changes in food webs and chains and can cause other organisms to die.
What could cause extinction of a species after a major environmental change?
Their bodies aren't adapted to the new environment yet.
What is the Major cause for the seasonal temperature variation at any given latitude on earth?
If you live in the northern hemisphere, summertime is when the earth is tilting closer to the sun. Winter is when the earth is tilting farther away. It the opposite if you're living in the southern hemisphere.
Why is sexual reproduction a source of genetic variations?
When alleles are recombined during sexual reproduction, they can produce dramatically different phenotypes. Thus, sexual reproduction is a major source of variation within many population.
Is genetic recombination a major source of variation among organisms?
Yes.
What are two things a species name may do?
A species name may provide information on the scientific classification and relationship of an organism within the taxonomic hierarchy. It can also help in the identification and communication of a particular species, allowing scientists to have a standardized way of referring to and studying organisms.
What are the sources of genetic variation in plants and each of the major pathogen groups?
mutation
How are progression and variation similar?
both represent major components of the FITT principle.
How long to bleed from arterial wound?
Bleeding for a major artery can cause death within a few minutes. The carotid artery in the neck and the femoral artery in the leg are two major arteries.
