43. What was the most significant condlusion that Gregor Mendel drew from his ex

Question

43. What was the most significant condlusion that Gregor Mendel drew from his experiments with pea plants? a. There is considerable genetic variation in garden peas. b. Traits are inherited in discrete units, and are not the results of "blending. d. Recessive genes occur more frequently in the F1 generation than do dominant ones. Genes are composed of DNA. e. An organism that is homozygous for many recessive traits is at a disadvantage. a. to obtain a larger number of offspring on which to base statistics b. to observe whether or not a recessive trait would reappear C. to observe whether or not the dominant trait would reappear d. to distinguish which alleles were segregating e. to be able to describe the frequency of recombination 44. Why did Mendel continue some of his experiments to the F2 or F3 generation? fibrillin. Patients are usually very tall and thin, with long spindly fingers, curvature of the spine, sometimes weakened arterial walls, and sometimes ocular problems, such as lens dislocation. From this information, which of the following would you conclude about Marfan syndrome? A) It is recessive B) It is dominant. C) It has a late age of onset60 years). D) It is pleiotropic. E) It is epistatic. 45.Marfan syndrome in humans is caused by an abnormality of the connective tissue protein 46. If you have an individual with the dominant phenotype, and you want to know if this is a homozygote or heterozygote, you would have to a. Cross it with a homozygous dominant individual. b. Cross it with a homozygous recessive individual c. Cross it with a heterozygote d. Determine the incomplete dominance is epistatic. e. Ask their mom. Moms are awesome, and always know everything about their children.

Explanation / Answer

43. The most significant conclusion was traits are inherited in discrete units. This conclusion was based upon the law of segregation. Each allele from each parent separates and will be transfered to the offspring.

Correct option b.

44. Mendel continued his experiments to F2 -F3 generations in order to find out which alleles were segregating and if that was mere based upon chance.

Correct option is d.

45. Marfan syndrome causes wide range of phenotypic effects such as tallness, thin, long fingers, visual impairment, arterial weakness etc. When a gene has influence on other genes then it is said to be pleiotropic.

So this syndrome is plieotropic because it is influencing other genes responsible for height, stature, vision and many more.

Correct option d.

46. In order to find out whether the given subject with dominant phenotype is homozygous or heterozygous, we cross it with a recessive homozygote. If the result gives all dominant phenotype, then the individual will be homozygous, but if the result is both dominant and recessive phenotype then the genotype of individyal will be heterozygous.

The correct option b.

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