This quiz works best with JavaScript enabled. Home > Genetics > Tree Improvement > Genetics Tree Improvement – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Genetics Tree Improvement Quiz 3 (15 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following does NOT restrict or decrease blood flow? A) Hardening of the arteries. B) Diabetes. C) Taking vasodilators. D) Very cold temperatures. Show Answer Correct Answer: C) Taking vasodilators. 2. Which of the following describes the process of the light-independent reaction in photosynthesis? A) The absorption and conversion of light energy to ATP and NADPH. B) The processing of glucose to make pyruvate or pyruvic acid and release ATP. C) The use of ATP and NADPH to convert CO2 to sugars. D) The breakdown of pyruvic acid molecules to release the energy stored in their molecular bonds. Show Answer Correct Answer: C) The use of ATP and NADPH to convert CO2 to sugars. 3. Which of the following is the end product of translation? A) DNA. B) RNA. C) Amino acids. D) Polypeptides. Show Answer Correct Answer: D) Polypeptides. 4. Which of the following statements is correct in comparing and contrasting prokaryotes and eukaryotes? A) Eukaryotes are much larger than prokaryotes, but otherwise they share the same structure. B) Cytoplasm is found in both prokaryotes and eukaryotes but in a slightly different form in each. C) Both prokaryotes and eukaryotes are mainly multicellular. D) Prokaryotes and eukaryotes both have distinct organelles, although prokaryotes have fewer of them. Show Answer Correct Answer: B) Cytoplasm is found in both prokaryotes and eukaryotes but in a slightly different form in each. 5. Look at the following crosses of plants with green seeds (G) and plants with yellow seeds (g). Which does NOT follow Mendel's law of segregation? A) Two green-seed plants (Gg X Gg) produce some green-seed offspring plants. B) Two green-seed plants (Gg X Gg) produce some yellow-seed offspring plants. C) A green-seed plants (GG X gg) produce all green-seed plants. D) A green-seed plant and a yellow-seed plant (Gg X gg) produce all green-seed plants. Show Answer Correct Answer: D) A green-seed plant and a yellow-seed plant (Gg X gg) produce all green-seed plants. 6. Caffeine is a compound found in the seeds of many different plants, such as coffee beans, cola nuts, and cacao beans (the source of chocolate). The presence of this chemical in all three types of plants suggests that these plants A) Inherited identical mutations. B) Share a common ancestry. C) Were exposed to the same type of radiation in the past. D) Were cloned from a caffeine plant. Show Answer Correct Answer: B) Share a common ancestry. 7. A farmer wanted to rid his apple trees of a particular leaf-eating insect. He sprayed his trees with an insecticide that killed 98% of the insects. The survival of 2% of this population of insects is most likely due to A) Genes obtained from another species. B) Certain chemicals that stimulated overproduction. C) Variations that resulted from sexual reproduction. D) Their ability to produce food from the pesticide. Show Answer Correct Answer: C) Variations that resulted from sexual reproduction. 8. Which of the following is a key difference between mitosis and meiosis? A) Mitosis allows for genetic variation, while meiosis results in generations of organisms with stable characteristics. B) Mitosis produces offspring more slowly, while meiosis has the advantage of producing offspring more quickly and easily. C) Mitosis produces cells that are almost identical genetically, while meiosis produces cells that differ genetically from each parent or from each other. D) Mitosis has two cell divisions, while meiosis has only me. Show Answer Correct Answer: C) Mitosis produces cells that are almost identical genetically, while meiosis produces cells that differ genetically from each parent or from each other. 9. The corn we eat today is larger and has more kernels than the corn people first grew thousands of years ago. Which process is most likely responsible for the changes that have occurred? A) Mitosis. B) Succession. C) Direct harvesting. D) Selective breeding. Show Answer Correct Answer: D) Selective breeding. 10. The instructions for the genetic traits of an organism are directly determined by the A) Numbers of A, T, C, and G units in a sugar molecule. B) Sequence of bases in DNA molecules. C) Length of a DNA molecule. D) Way the bases are paired in the two strands of a DNA molecule. Show Answer Correct Answer: B) Sequence of bases in DNA molecules. 11. Which of the following classifications includes all three of the others? (HINT remember the levels of taxonomy) A) Family. B) Genus. C) Phylum. D) Order. Show Answer Correct Answer: C) Phylum. 12. Farmers may someday clone their best milkproducing cow into a whole herd. What potential disadvantage might be important to consider in having such a large group of clones on one farm? A) It may be difficult to tell the animals apart. B) Lack of variation may limit survival in the herd. C) The cows could be fertilized by only one type of bull. D) The cows could be mated only with each other. Show Answer Correct Answer: B) Lack of variation may limit survival in the herd. 13. Which statement best describes how a new human trait develops and can be passed on to future generations? A) A mutation in a stomach cell results in the inability of a woman to produce a certain digestive enzyme. B) A mother consumes alcohol during pregnancy, causing the fetus to have a low birth weight. C) During meiosis, a new combination of DNA subunits is formed. D) During mitosis, DNA does not divide correctly and the cells die. Show Answer Correct Answer: C) During meiosis, a new combination of DNA subunits is formed. 14. Which molecules are needed to cut and copy segments of DNA? A) Reproductive hormones. B) Carbohydrates. C) Antibodies. D) Biological catalysts. Show Answer Correct Answer: D) Biological catalysts. 15. A tomato gene, known as the SIKLUH gene, has recently been discovered. The gene leads to the production of larger tomatoes. The gene affects fruit size by increasing cell layers and promoting extra cell divisions. In order to produce large fruit in other commercial plant species, scientists might A) Clone the genes of other types of plants until they develop larger fruits. B) Breed the tomatoes with other fruits such as apples. C) ) insert the gene into other types of plants. D) Stimulate the process of meiosis in the other plants. Show Answer Correct Answer: C) ) insert the gene into other types of plants. ← PreviousRelated QuizzesGenetics QuizzesGenetics Tree Improvement Quiz 1Genetics Tree Improvement Quiz 2 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books