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Which of the following statements is true about the effects of mutations in somatic cells and gametes?
| A. |
Only mutations in gametes can affect future generations. |
|
| B. |
Only mutations in somatic cells can affect future generations. |
|
| C. |
Neither mutations in somatic cells or gametes can affect future generations. |
|
| D. |
Mutations in both somatic cells and gametes can affect future generations. |
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Solved in 3 steps
- Which of the following statements best describes the outcome of a mutation? a. A mutation always results in a mutant genotype b. A mutation always results in a mutant karyotype c. A mutation always results in a mutant phenotype d. A mutation always results in a mutant proteinWhich among the following statements is not true about mutations? * a.) It may either occur at the chromosomes or at the sequence of nucleic acids. b.) It is caused either by mutagens or through hereditary genes. c.) All mutations cause diseases and disorders in the developing organism. d.) All mutations causes a change in the structure or sequence of the genetic material.In the experiment of cell fusion, when tumor cells were fused with normal cells, the initially formed tetraploid cells (or subsequently arising sub-tetraploid cells) were discovered to have lost the ability to form tumors. What is the explanation for this observation?
- If you wanted to produce a fly larvae with two head ends, which of the following would you do? Group of answer choices A) Add functional bicoid protein to the head end of a wildtype larva B) Add functional bicoid protein to the tail end of a mutant larva C)Add functional bicoid protein to the tail end of a wildtype larva D)Add bicoid protein from a mutant fly to the tail end of a wildtype larvaIf a mutation in a homeotic gene produced the following phenotypes, would you expect it to be a loss-of-function or a gain-offunction mutation? Explain your answer. A. An abdominal segment has antennae attached to it. B. The most anterior abdominal segment resembles the most posterior thoracic segment. C. The most anterior thoracic segment resembles the most posterior abdominal segment.Why would a scientist wish to induce mutations? a. to increase the number of mutated phenotypes b. to create mutations in specific genes c. to test for carcinogen activity d. to create tumors for cancer research e. because she was crazier than a mutated bedbug
- The more cells divide, the more likely it is that mutationswill accumulate in their genomes. Explain how ?For the first experiment ever on Drosophila mutations. Answer the following questions. a. What is the title of the first published paper explained the experiment and what is the name of the Author? b. What is the first mutation discovered in Drosophila? c. Explain the changes in the Drosophila yellow mutant (Y)compared to wild type.According to the Lyon hypothesis,a. one of the X chromosomes is converted to a Barr body insomatic cells of female mammals.b. one of the X chromosomes is converted to a Barr body in allcells of female mammals.c. both of the X chromosomes are converted to Barr bodies insomatic cells of female mammals.d. both of the X chromosomes are converted to Barr bodies inall cells of female mammals.
- DNA sequencing has provided data to indicate that cancer cells may contain tens of thousands of somatic mutations, only some of which confer a growth advantage to a cancer cell. How do scientists describe and categorize these recently discovered populations of mutations in cancer cells?Suppose that you could undergo genetic testing at age 18 for susceptibility to a genetic disease that would not appear until middle age and has no available treatment. a. What would be some of the possible reasons for having such a genetic test and some of the possible reasons for not having the test? b. Would you personally want to be tested? Explain your reasoning.A. What is the pathogen that is attacking bananas today?b. Why is this especially problematic in Africa? C. Why do we expect to lose the war with this pathogen?d. What is random mutagenesis?