Gregor Mendel noticed that recessive characteristics are "masked" in the F1 generation but reappear in the F2 generation. Which of the following laws best explains this observation? a. The law of products b. The law of segregation c. The law of independent assortment d. The law of linked alleles e. None of the above

Gregor Mendel noticed that recessive characteristics are "masked" in the F1 generation but reappear in the F2 generation. Which of the following laws best explains this observation? a. The law of products b. The law of segregation c. The law of independent assortment d. The law of linked alleles e. None of the above

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 2QP: The text outlines some of the problems Frederick William I encountered in his attempt to breed tall...

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Which of the following is evidence that Mendel had that helped him to construct his Law of Segregation?A) His F2 generation in the dihybrid cross resulted in a 1:1:1:1 distribution of phenotypes.B) He found no linkage of different genes in the offspring of his pea plants.C) The F1 generation of the monohybrid cross resulted in blended phenotypes.D) The F2 generation of the monohybrid cross resulted in the recessive trait reappearing as a phhenotype.E) Two of the above are correct.
Gregor Mendel proposed the law of independent assortment based on the observation that dihybrid crosses of heterozygous individuals produced progeny in a 9:3:3:1 ratio. For this observation to hold, which assumption must be true? A. The traits are governed by genes on different chromosomes. B. The traits are governed by genes on the same chromosome. C. The traits are governed by genes with only two alleles. D. The traits are governed by genes with only three alleles.
What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants? Select one: a. There is considerable genetic variation in garden peas. b. Genes are composed of DNA. c. Recessive genes occur more frequently in the F1 generation than do dominant ones. d. Traits are inherited in discrete units (genes), and are not the results of "blending."
Gregor Mendel observed that some traits in his peas would disappear in the F1 generation but would then reappear in the next (F2) generation. He then proposed that A. new mutations were frequently generated in the F2 progeny, "reinventing" traits that had been lost in the F1. B. members of the F1 generation had only one allele for each character, but members of the F2 had two alleles for each character. C. the mechanism controlling the appearance of traits was different between the F1 and the F2 plants. D. this reappearance of the trait was due to dominance of an inherited factor over another. E. this was caused by a mutation that resulted in a dysfunctional protein being encoded by one of the two gene copies.
If Mendel chose to study inheritance of height in human, would he have likely discovered the same princeple of heredity that he discovered in working with pea plants? A. Yes, because human height is a continuously varying trait, just like the traits Mendel studied in pea plants. B. No, because the generation time in humans is relatively long compared with pea plants. C. Yes, because the principles of segregation and independent assortment also apply to human genes. D. No, because human height is not genetically determined.
Mendel, the father of genetics, was a careful researcher who studied the inheritance of certain traits in garden peas. Which of the following was NOT part of Mendel's research strategies? A.) He crossed true-breeding (self pollinating) pea plants. B.) He allowed eggs to be fertilized ONLY by self pollination. C.) He analyzed his data mathematically. B.) He controlled variables by studying 1 or 2 traits at a time.
Which of the following statements is false?a. Mendelian inheritance patterns obey the law of segregation.b. Mendelian inheritance patterns obey the law of independentassortment.c. All inheritance patterns show a simple dominant/recessiverelationship.d. None of the above is false
What does a bell-shaped curve of a graph indicate? A. Mendelian inheritance pattern B. Incomplete dominance C. Codominance D. Continuous variation
In the P cross between a homozygous, round pea parent and a homozygous, wrinkled pea parent, which of the following did Mendel either observe or subsequently conclude?A) All somewhat wrinkled peas in the F1 showed blending inheritance.B) All round F1 peas led Mendel to conclude independent assortment.C) The F1 generation consisted of all peas being round and yellow.D) Two of the above are correct.E) None of the above is correct.
In the P cross between a homozygous, round pea parent and a homozygous, wrinkled pea parent, which of the following did Mendel either observe or subsequently conclude? A) All somewhat wrinkled peas in the F1 showed blending inheritance. B) All round F1 peas led Mendel to conclude independent assortment. C) The F1 generation consisted of all peas being round and yellow. D) Two of the above are correct. E) None of the above is correct.
The text outlines some of the problems Frederick William I encountered in his attempt to breed tall Potsdam Guards. a. Why were the results he obtained so different from those obtained by Mendel with short and tall pea plants? b. Why were most of the children shorter than their tall parents?
Mendel also studied tall and short varieties of pea plants. When he crossed tall x short plants together, the F1were tall. The tall F1 plants were self-hybridized to produce the F2. What proportion of phenotypes would be expected in the F2? 1:2:1 tall:intermediate:short 3:1 tall:short 1:1 tall:short 3:1 short:tall 1:2:1 intermediate:tall:short