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Why is the process of evolution consistent with a particulate theory of inheritance rather than a blending theory of inheritance?
Wiki User
∙ 12y ago
well what HAPPEN THAT UR FACE IN BUTUS
Wiki User
∙ 12y ago
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What important element of evidence or observation did Darwin's theory of evolution lack?
A mechanism of heredity. Darwin's concept, panspermia, was based on a blending of factors he called gremules that originated with either sex and were in the blood. This was shown to be completely wrong by Mendel's work on particulate inheritance.
Explain how Mendel's particulate hypothesis is different from the blending hypothesis of inheritance?
Mendel showed in his experiments that inherited traits are not passed through the blending of inheritance theory. According to the blending of inheritance theory, an offspring's traits are a blend between the traits of the parent organisms. In Mendel's experiments however, he showed that this was not true, and that inheritance is actually based on genes, through the observation of recessive traits. He observed that an offspring could have a trait that neither of the parents had, which is now explained through both of the parents having the recessive gene for the trait, but not showing it because they are heterozygous dominant. There is a 25% chance that the offspring of two heterozygous dominant parents will produce a homozygous recessive offspring that will show the trait that neither of the parents shows.
Is A before blending cake ingredients a solution or a mixture?
It is a mixture
What factor contributes to cultural change over time?
Blending cultures.
Is a factor that contributes to cultural change over time?
Blending cultures.
What did Darwin not know about his theory of evolution?
A coherent mechanism of inheritance. His " blending " concept was totally wrong as Mendel showed that inheritance is particulate in nature.
How is Mendel's particulate hypothesis is different from the blending hypothesis of inheritance?
The blending hypothesis, but not the particulate hypothesis, maintained that after a mating, the genetic material provided by each of the two parents is mixed in the offspring, losing its individual identity.
Was genetic basis for variations included in Darwins theory of evolution?
No. Darwin had no idea of what a gene was and did not even know that inheritance is particulate. He held with a " blending " idea called panspermia that was totally incorrect. Mendel, by mathematical analysis, found that heritability was based on the particulate " factor. " Today we call these " factors " genes.
What knowledge did Darwin lack that scientist now use to explain evolution?
Darwin lacked a sensible mechanism of heredity. His concept of blending was so off the mark that a Scottish engineer showed that evolution could not take place with the mechanism Darwin proposed. Mendel's concept of particulate inheritance was the correct solution to this problem.
How did both Darwin and Wallace fail to understand natural selection?
Both failed to understand the mechanism of inheritance. Darwin had a mistake " blending " idea and Wallace seemed to go along with this concept, though inheritance is particulate.
What important element of evidence or observation did Darwin's theory of evolution lack?
A mechanism of heredity. Darwin's concept, panspermia, was based on a blending of factors he called gremules that originated with either sex and were in the blood. This was shown to be completely wrong by Mendel's work on particulate inheritance.
Why blending inheritance is an incorrect hypothesis?
because in order for blending inheritance to occur, all variation would have to be diluted out
What is the type of inheritance that would suggest the concept of blending?
Blending inheritance is inheritance in which contrasting parental characters appear as a blend in the offspring.
How does Mendel theory of inheritance support Darwins theory of natural selection?
By giving the theory a mechanism of inheritance. Particulate inheritance, where each parent contributes chromosomes ( Mendel dod not know what a chromosome was and called genes " factors " ) that contain separate alleles that contribute to the progeny's traits. Darwin's idea of " blending " inheritance was completely wrong.
Explain how Mendel's particulate hypothesis is different from the blending hypothesis of inheritance?
Mendel showed in his experiments that inherited traits are not passed through the blending of inheritance theory. According to the blending of inheritance theory, an offspring's traits are a blend between the traits of the parent organisms. In Mendel's experiments however, he showed that this was not true, and that inheritance is actually based on genes, through the observation of recessive traits. He observed that an offspring could have a trait that neither of the parents had, which is now explained through both of the parents having the recessive gene for the trait, but not showing it because they are heterozygous dominant. There is a 25% chance that the offspring of two heterozygous dominant parents will produce a homozygous recessive offspring that will show the trait that neither of the parents shows.
Did the scientists of Darwin's time know how hereditary changes takes place?
No. Generally, people believed in blending inheritance ie something from each parent blended or mixied together in the offspring. The fact that inheritance is particulate ie particles (now called genes) are passed from parent to offspring and remain separate from each other, was not known until Mendel carried out his experiments on inheritance in pea plants.
How did Mendel explain his theory's apparent conflict with Darwin's recent accepted theory of evolution.... What did he mean?
He was at a meeting in his home country and he was explaining his laws of heredity when someone mentioned that this was contra-Darwin. Mendel stood his ground and said Darwin was wrong here. Darwin had a mechanism of heredity that was pure speculation ( and he admitted that ) and very wrong. Mendel, mathematically and experimentally showed the laws of inheritance and showed it was particulate and not a blending of the traits.
