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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.
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Why is the process of evolution consistent with a particulate theory of inheritance rather than a blending theory of inheritance?
well what HAPPEN THAT UR FACE IN BUTUS
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.
Which is true about postmodern experiments with form?
they included the blending of different genres
Is blending food a physical or chemical change?
Blending food is considered a physical change rather than a chemical change. In blending, the food is physically broken down into smaller pieces, but its chemical composition remains the same. No new substances are formed during blending, so it does not involve a chemical reaction.
Is A before blending cake ingredients a solution or a mixture?
It is a mixture
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.
Why the blending hypothesis rejected as the method of inheritance?
The blending hypothesis was rejected as the method of inheritance because it could not explain the observed patterns of inheritance, especially the reappearance of traits in later generations that were not visible in the immediate offspring. Additionally, the blending hypothesis does not account for the variation observed in offspring that is more consistent with the principles of Mendelian genetics.
Why is the process of evolution consistent with a particulate theory of inheritance rather than a blending theory of inheritance?
well what HAPPEN THAT UR FACE IN BUTUS
What is the type of inheritance that would suggest the concept of blending?
Blending inheritance suggests a type of inheritance where the traits of the parents are mixed together in the offspring, resulting in an intermediate phenotype. This concept contrasts with the idea of particulate or Mendelian inheritance, where discrete units (alleles) are passed from parents to offspring without blending.
How do you describe a pattern of inheritance that the blending hypothesis fails to explain?
A pattern of inheritance that the blending hypothesis fails to explain is incomplete dominance, where the heterozygous phenotype is intermediate between the two homozygous phenotypes. This contradicts the blending hypothesis, which suggests that the traits of the parents are mixed together in the offspring. In incomplete dominance, the traits remain distinct in the offspring.
How do the constancy hypothesis and blending hypothesis for transmission of traits differ from observable patterns of inheritance?
The constancy hypothesis posits that offspring inherit traits solely from one parent, while blending hypothesis suggests a blending of parental traits in offspring. Observable patterns of inheritance, such as Mendelian genetics, show that traits are inherited through discrete units (genes) that are passed on unchanged from parent to offspring. These patterns do not support the constancy or blending hypotheses.
What is the blending hypothesis of inheritance?
The blending hypothesis of inheritance suggests that traits from two parents blend together in the offspring, resulting in intermediate characteristics. This idea has been largely discredited in favor of Mendel's principles of independent assortment and segregation, which describe how traits are inherited through discrete units called genes.
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.
Why blending inheritance is an incorrect hypothesis?
Blending inheritance is considered incorrect because it suggests that offspring inherit a mix of parental traits that blend together, leading to a loss of variation across generations. In reality, inheritance is controlled by discrete units of heredity (genes) that are passed on intact from parents to offspring. This mechanism allows for the preservation of genetic variability within populations.
What did Darwin not know about his theory of evolution?
Darwin did not know about the role of genetics in inheritance, as Gregor Mendel's work on inheritance was not known to Darwin in his lifetime. Additionally, he did not have knowledge of the mechanism of heredity through DNA and genes.
What type of inheritance that involves the partial expression of two different alleles is called .?
Incomplete dominance is the type of inheritance that involves the partial expression of two different alleles. This results in a blending of traits from both alleles, producing an intermediate phenotype.
What did Mendel's experiments show about blending inheritance?
Blending inheritance was one hypothesis for how traits were passed from one generation to the next. The idea was that if both parents had different traits for a particular character, then the offspring would exhibit a blend of the two traits. For example, if the character in question is flower petal color, and one parent had white flowers and the other had red flowers, the hypothesis of blending inheritance would predict the offspring would have pink flowers, a blend of the two parent traits. In fact, if you cross red and white flowered plants, you do get a pink flower. However, Mendel was able to show that the inheritance of flower color was particulate, not blending, by going one step further and crossing two pink flowered parents. He found the offspring had a ratio of 1:2:1 for red:pink:white, so the granparents' traits were reappearing. This "skipping of generations" was classically Mendelian: the alleles for red and white were both contained in the pink flowers, so that when they were crossed, they were able to be seen in the offspring. In this case, consider that red flowers have the genotype RR (homozygous for R allele), white flowers have the genotype WW (homozygous for the W allele), and pink flowers have the genotype RW (heterozygous), where R and W are two different alleles for flower color. When red (RR) and white (WW) are crossed, the offspring can only get the R allele from the red parent and the W allele from the white parent, so they are all heterozygous (RW), resulting in a pink color. When two pinks are crossed (RW x RW), then each parent can give either a red allele (R) or a white allele (W) to the offspring, resulting in the following equally likely possible combinations: RW, RR, WW, and WR. Since WR and RW are the same (pink), the expected ratio of offspring is 1 RR: 2 RW: 1 WW. This is considered an example of particulate inheritance, not blending inheritance, because the alleles (particles) are being preserved throughout the generations; it is simply the combinations of alleles that give the appearance of a blending inheritance mechanism when red and white are crossed to produce pink. In classical genetics, the first cross between red (RR) and white (WW) was considered the P (parental) generation. The hybrid offspring produced (RW) were considered the first filial generation (F1). Crossing two F1's shows that the inheritance is particulate, by looking at the 1:2:1 ratio in the F2 generation (1 red: 2 pink: 1 white). Mendel was able to deduce the theory of particulate inheritance by carefully following the generations from P to F1 to F2.
