Answer the following statements true (T) or false (F)
1. Abnormalities in the number of chromosomes, known as nondisjunction, are more common in younger parents.
2. Johann Gregor Mendel posited in his study on inheritance in plants that offspring exhibited an even blending of physical appearance and traits from parents.
3. This statement is false. Mendel posited in his study on inheritance in plants that offspring exhibited traits that are transmitted faithfully from parents to offspring in specific patterns.
4. This statement is false. The process of meiosis was not understood by the scientific community
during Mendel’s lifetime. Mendel came to understand his laws of segregation and independent assortment through his meticulous breeding of pea plants with distinct observable traits.
5. An organism can have the genotype for an inherited genetic disease or condition, but never develop that condition.
1. False
This statement is false. Abnormalities in the number of chromosomes, known as nondisjunction, are more common in older parents.
2. False
This statement is false. Mendel posited in his study on inheritance in plants that offspring exhibited traits that are transmitted faithfully from parents to offspring in specific patterns.
3. False
This statement is false. The process of meiosis was not understood by the scientific community
during Mendel’s lifetime. Mendel came to understand his laws of segregation and independent assortment through his meticulous breeding of pea plants with distinct observable traits.
4. False
This statement is false. If an animal with a genotype of Zz breeds with an animal with genotype ZZ, its offspring will only express the dominant trait.
5. True
This statement is true. An organism can have the genotype for an inherited genetic disease or condition, but never develop that condition.
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The process illustrated in the accompanying figure is:
a. DNA synthesis. b. translation. c. transcription. d. a frame shift mutation. e. protein synthesis.
Animal growth primarily occurs by an increase in the:a
number of tissues and organs. b. number of cells. c. types of cells produced. d. number of cell functions. e. number of cell shapes
A portion of DNA that encodes a specific protein is
a) a gene. b) a chromosome. c) a chromatid. d) a centromere. e) a kinetochore.
Natural selection has favored the dark form of the peppered moth in areas subject to severe air pollution, perhaps because on darkened trees, moth-eating birds see them less easily. As pollution abated, the light forms increased in the population because
A. birds ate more light moths. B. light moths were able to produce more offspring than dark moths. C. light moths had lower fitness than dark moths. D. light moths were more genetically variable than dark moths.