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Why does polyploidy produce new species?
a) Nondisjunction event during meiosisb) Nondisjunction event during mitosisc) Synapsis of homologous chromosomesd) Allopolyploid plants cannot become biologically fit new species; they are always sterile.
What is a member of a group that can interbreed?
it is known as a species.
The species and the individual in the ecosystem?
A species is a group of organisms that can reproduce and produce fertile offspring, while an individual is a single member of that species. In an ecosystem, multiple species interact with each other and their environment, with individuals playing specific roles in the functioning of the ecosystem.
What is the called when two organisms can no longer successfully breed?
If you have a species from which a new species is produces, how is it that that new species is produces such that it cannot breed with the parent species? We can say that a new species arises and that interbreeding is possible, but eventually you merge species, or the species weren't all that distinct to begin with. But how can a new species arise where interbreeding is impossible? if one member were to change so drastically into a new species such that he couldn't breed, then another would have to change in just the same way to allow for mating. geographical separation doesn't explain anything because there has to be a moment when changes, which are reflected in an individual not in a species as a whole, has to occur in the separated population. How can the geographically separate populace drift together such that they are no longer able to breed and yet able to breed with one another? There must be a distinct moment in time when this happens because changes occur in new members.
When all the in individuals of a species have died what is it called?
The death of every member of a species is called extinction. When a large number of different species is dies out at the same time it is called mass extinction.
How is sympatric speciation similar to allopatric speciations?
allopatric speciation happens when a physical barrier divides two populations of the same species and sympatric speciation happen when no physical barrier divides the member of a population, but methods such as polyploidy (chromosome doubling) do not let the members of the species have fertile offspring, 2 species are formed (the parental "normal" species and the divergent species "polyploids"). Remember that a species is defined as a population that when mated with one another produce fertile offspring. A polyploid and a parental organisms can not produce fertile offspring together so they become two different species and speciation is said to have occurred.
What is the differences between members of the same species called?
It varies based on the organism: breed, race, strain, member are all used.
What causes geographic isolation?
Geographical isolation involves the separation of a group of organisms from the rest of the population, or a population from other populations by geographical means, be it by volcanic activity, a flood, a new river that cannot be crossed. The idea being that the population can only breed with itself and not with other populations, leading to genetic isolation. This is called the founder effect. The separated organisms can only mate amongst themselves, reducing their genetic diversity as they have a limited range of alleles. This can lead to speciation etc...
Why does polyploidy produce new species?
a) Nondisjunction event during meiosisb) Nondisjunction event during mitosisc) Synapsis of homologous chromosomesd) Allopolyploid plants cannot become biologically fit new species; they are always sterile.
The evolution of reproductive isolation between two or more groups of organisms is?
The origin of new species. To be considered a member of a singe species, organisms must be capable of reproducing and producing viable offspring. Once they have evolved to become reproductively isolated, they can no longer fulfill these requirements and are considered separate species.
What species are Grass adder and smooth?
They are the three native British species of snakes. The Grass Snake (Natrix natrix) is a member of the Natrix species. The Viper (Vipera berus) is a member of the Vipera species and the Smooth Snake (Coronella austriaca) is a member of the Colubrid species.
When no living member of species exist the species?
when there are no living members of a species the species is said to be "extinct".
How do populations vary as a result of their geography?
there are many geographical isolation which makes one population to not able to meet its species member on the other side like some of the animals which are not able to swim can not cross sea or river and get isolated from other members of same species and the by the long time they get very much different in physiological and behaviour that they start count in different species
What is canabalism?
it is when a a member of a species eats another animal of the same species
What is meant by the terms allograft?
Its a tissue or organ obtained from one member of a species and grafted to a genetically dissimilar member of the same species.
The US's traditional policy of isolation was abandoned when the US became a member of the?
neutrality acts of 1935 and 1937
When a species dies out what does it become?
When the last living member of that species dies, the species become "extinct".
