Asked in GeneticsGenetic Engineering
What would make a population have more genetic variation?
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What are the chances of a brown eyed Hispanic man and green eyed redhead woman having a baby with blue or green eyes?
Depends on the genetic make up of the father. There is a lot of genetic variation in the hispanic population and he may well have genetic material that would result in a lighter eyed and or red headed child. Eye color is not a strictly dominant or recessive characteristic which allows for a lot of variation in color.
Asked in Botany or Plant Biology
How is it possible for plants that have identical genetic make up to show differences?
Why do a bunch of purple flowers make a few white flowers?
What make small populations vulnerable to extinction?
there are several factors that make small populations vulnerable. First off there are demographic factors. If a small population faces a forest fire, they are more susceptible to extinction opposed to a large, wide-spread population. you also have the lack of genetic availability. without genetic variation, a species can become prone to disease. there are many more, and I could go on.
How does using fungicides and pesticides reduce the genetic variability within a population?
When you kill off certain organisms within a population, certain special traits and genes they possess can no longer be spread. Certain types may be effected greater than other types. Say some disease only killed people with blue eyes, then no one else in the world would have blue eyes. Then there would be less variation between people. When organisms with certain genes are killed, there is less variation within the population for different traits and things that make them special are lost.
Asked in Genetic Engineering
Why crossing-over is an important source of genetic variation?
What is the difference between discontinuous and continuous variation?
Let us take height as an example and make our population 10 organisms for illustrative purposes. Population A: 5'1''--5'2''---5'3'' ---5'4''--5'5''--5'6'' and etc [ 5 + (n + 1)] This population has continuous variation as this fits the definition. Well distributed. Population B: 3 organisms at 5'1'' ---2 organisms at 5'4'' and 5 organisms at 5'7'' This is discontinuous variation and would be readily apparent if you took your data an distributed it under a normal curve.
Asked in Genetics
How does Meiosis lead to make genetic variation within a species of organisms?
Asked in Demographics, Population
Is it a stable population if it changes from year to year?
Stable reflect variation. We can use terms of being: Very stable, less stable, not so stable. At the same time in same but inverse order: A little variation, more variation, most variation. A stable population would be considered a population that does not vary in numbers that much. Fluctuation is considered normal. Stability of a population is its stability over time as in several generations. An unstable population would go drastically up or down within few generations. We do not count a population as stable the same way as we would categorise an element to be stable. A population is allowed to vary slightly over time, where as an element that vary slightly over the same time might be called unstable. Other factors are to be considered: If a population is very high as in numbers of older not propagating specimens then it could be considered an unstable population because it would be unable to sustain its numbers and diminish over time. If a population lives under conditions unsuitable for sustaining quality of life then it would affect its stability. More factors will apply. Stability is statistics. We can make statistics to suit our present needs even if the numbers does not lie.
Asked in Population
Why are populations more genetically diversed than the individuals that make them?
Genetic variation is expressed in genes which form chromosomes. Thus any individual in a population of breeding animals can only 'hold' the gene variations that can fit into that individuals chromosomes, while the number of chromosomes in the population is the number found in the individual * the number of individuals comprising the population, a much greater space for 'holding' variations in genes.
Traits that make an individual organism different from other members of its species?
Asked in Autism
What are the controversial surroundings that causes autism?
Asked in Population
If all the organisms of the same kind make up a population what would two or more of these make up?
Asked in Biology, Charles Darwin, Evolution
Why is variation important for natural selection and what are the main sources of this variation?
Without variation natural selection would have nothing to select from that would confer survivability and reproductive success. on the organisms being selected against the organisms conspecifics and the immediate environment. Mutation and sexual recombination provide the main sources of this variation that is needed to make selection work. Mutation is the variation presented that causes the real adaptive change that can lead to speciation.
Asked in Natural Selection
What role does variation do in the proccess of natural selection?
Variation is the differences among members of a population. Members of the population who have a difference from the other members will either be more or less successful in the wild. Organisms who are better adapted have a higher chance of surviving than those who aren't and variations either make organisms better or worse.
Asked in Biology
What is the role of crossing-over in ensuring genetic variation?
How would variegated leaves affect the nutritional value of a plant for those that eat it compared to a normal leaf?
Asked in Genetics
What is the genetic make up of the daughter cells formed by mitosis differ from the parent cell?