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Phenotypes are the traits expressed by the genotype. So, for blood type, a person can have A and i alleles (genotype). However, in the phenotype, since i is recessive, only the A will be expressed, and the person will have an A blood type.
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Why does natural selection depend on variations and DNA?
The variations in the DNA are responsible in differences between desirable traits and unwanted traits. Mutations also cause changes in the DNA.
What is the major cause of variation within species?
sexual reproduction is the major cause of variations within a specie
Are dominant phenotypes more common?
No. If you think of some of the dominant human phenotypes, you'll notice they are uncommon (or even very rare). Examples are sexydactyly (six fingers/toes), Huntington's chorea, photic sneezing, widow's peak, cheek dimples, cleft chin, and achondroplasia (the most common form of dwarfism). The reason is because the dominant alleles that cause these phenotypes are uncommon in our gene pool.
Which of these was part of Charles Darwin's theory?
Genetic recombinations of DNA cause variations of genetic traits .
Land and water temperature changes cause differences in?
Air pressure
When thinking about genotypes and phenotypes which is the cause and which is the effect?
Genes are the cause ... in all cases.
What might the phenotypes be of two organisms that were found to have different genotypes but the same phenotype?
Phenotypes refer to the visible traits (or characteristics). Genotypes are the underlying causes for those traits. There may be different genotypes that cause the same phenotype. If the observable traits from one individual are the same from another individual, one can say they have the same phenotypes.
How could a farmer increase the number of genotypes and phenotypes present in his next apple crop?
Cross plants that have very different characteristics
How variations in the intensity of sunlight can cause temperature differences on earth surface?
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Why does natural selection depend on variations and DNA?
The variations in the DNA are responsible in differences between desirable traits and unwanted traits. Mutations also cause changes in the DNA.
What genotypes cause Klinefelter's syndrome?
The only genotype to cause Klinefelter's syndrome is XXY.
What is the major cause of variation within species?
sexual reproduction is the major cause of variations within a specie
What produces gene flow?
sudden and stiff boners cause gene flow in most genotypical phenotypes.
What differences cause wind?
The differences in air pressure.
The angle of the suns rays is the cause of the differences in temperature at the?
It is the cause of the differences in temperature at the equator and North and South Poles.
What Variations in air pressure from place to place are the principal cause of?
clouds
What is the cause of daily variations in temperature on a planets surface?
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