This quiz works best with JavaScript enabled. Home > Genetics > Genetics Tree Improvement – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Genetics Tree Improvement Quiz 1 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which statement concerning sexual reproduction is correct? A) It is not necessary in order for the individual to survive. B) The offspring are identical to the parent. C) It is necessary in order for the individual to survive. D) The offspring are identical to each other. Show Answer Correct Answer: A) It is not necessary in order for the individual to survive. 2. A mutation occurring in a human can be passed from parent to offspring when it occurs in a A) Lung cell, due to exposure to a toxic gas. B) Gamete formed in the ovary. C) Body cell undergoing mitosis. D) Heart cell with chromosome damage. Show Answer Correct Answer: B) Gamete formed in the ovary. 3. A heterotrophic organism that recycle dead organic matter into nutrients that are useful to plants and other organisms is classified in which of the following kingdoms? A) Protista. B) Fungi. C) Plantae. D) Animalia. Show Answer Correct Answer: B) Fungi. 4. Potato farmers in Ireland during the mid 1800s all grew the same type of potato. The potato plants were all produced as clones of one another. When a fungus infected the crop, all of the potatoes were destroyed. This occurred because these potato plants A) Had little genetic variability. B) Had increased biodiversity. C) Were the product of fertilization. D) Were the result of biotechnology. Show Answer Correct Answer: A) Had little genetic variability. 5. Survival of at least a few members of a population after a major environmental change is most dependent on A) The population having an individual that is adapted to the original environment. B) The population having an individual that is adapted to great changes in the temperature in its environment. C) Variations in many different traits in many individuals in the population. D) No variations in the color of the fur, skin, or feathers of the individuals in the population. Show Answer Correct Answer: C) Variations in many different traits in many individuals in the population. 6. A woman changes her hair color to red; however, her children will not inherit this red hair color because the woman does not have A) Genes for red hair in her skin. B) Genes for red hair in her sex cells. C) Proteins for red hair in the placenta. D) Proteins for red hair in her egg cells. Show Answer Correct Answer: B) Genes for red hair in her sex cells. 7. A certain breed of sheep has a dominant allele (W) that produces white hair and a recessive allele (w) that produces black hair. For a white sheep, which of the following could you identify? A) The genotypes for both of its parents. B) The phenotypes for both of its parents. C) Its genotype for hair color. D) Its phenotype for hair color. Show Answer Correct Answer: D) Its phenotype for hair color. 8. One of the three kinds of RNA molecules produced during transcription is mRNA. What is the main purpose of mRNA? A) Build ribosomes form variou proteins. B) Carry amino acids to the correct place on the genetic template. C) Modify the RNA molecules with additions and deletions. D) Provide a template used for sequencing amino acids into a polypeptide. Show Answer Correct Answer: D) Provide a template used for sequencing amino acids into a polypeptide. 9. Male turkeys are birds that naturally strut and display their large tail feathers, which attracts female turkeys. This display is an example of A) A behavioral adaptation. B) Selective breeding. C) Asexual reproduction. D) A learned behavior. Show Answer Correct Answer: A) A behavioral adaptation. 10. Over time, data that support the successful evolution of a species would include observations that describe A) An increase in the genetic changes occurring in body cells. B) A decrease in the genetic variety carried in sex cells. C) An increase in the proportion of offspring that have favorable characteristics. D) A decrease in the proportion of the population that has beneficial traits. Show Answer Correct Answer: C) An increase in the proportion of offspring that have favorable characteristics. 11. When a paramecium, a single-celled organism, is living under stressful conditions, it sometimes switches from asexual to sexual reproduction. The main advantage when this switch occurs is that the paramecium is most likely to A) Produce fewer offspring. B) Increase variation among its offspring. C) Avoid having to find a mate. D) Produce clones of itself. Show Answer Correct Answer: B) Increase variation among its offspring. 12. Which of the following describes the Golgi apparatus? A) A system of flattened sacs and maxelike channels that crisscross the cytoplasm. B) The organelle where sacs package proteins and lipids into vesicles. C) Vesicles that contain digestive enzymes to break down food, debris, and invading bacteria. D) A network of protein filaments that give shape to a cell, allow the cell to move, and attach organelles to its plasma membrane. Show Answer Correct Answer: B) The organelle where sacs package proteins and lipids into vesicles. 13. A person who contracts chicken pox as an adult lacks which of the following? A) Memoery cells. B) Memory cells for a specific pathogen. C) Plasma cells. D) B lymphocyte cells. Show Answer Correct Answer: B) Memory cells for a specific pathogen. 14. A scientist at a large natural history museum has a collection of fossils that were found throughout the world. Only a few of the fossils represent species that are still alive on Earth today. One reason for this is that A) Most of the species that have ever lived on Earth are alive today. B) Most of the species that have ever lived on Earth are extinct. C) Fossils of only extinct species have been found. D) Species alive today will not form any fossils for future discovery by scientists. Show Answer Correct Answer: B) Most of the species that have ever lived on Earth are extinct. 15. The theory of evolution states that A) Species that are extinct have no biological relationship to living species. B) Different animal species always interbreed to form new and different species. C) Species change over time, sometimes developing into new species. D) The environment of Earth is constant over time. Show Answer Correct Answer: C) Species change over time, sometimes developing into new species. 16. A plant exposed to high temperatures shows a steady increase in water loss for 90 minutes. Then the rate of water decreases rapidly. What is the most likely cause of this change in the rate of water loss? A) A change in amount of sunlight. B) Closing of stomata. C) Insufficient CO2 for photosynthesis. D) Insufficient O2 for photosynthesis. Show Answer Correct Answer: B) Closing of stomata. 17. Lipid synthesis is carried out to which part of the cell? A) Smooth endoplasmic reticulum. B) Rough endoplasmic reticulum. C) Ribosomes. D) Lysosomes. Show Answer Correct Answer: A) Smooth endoplasmic reticulum. 18. Female hammerhead sharks sometimes produce offspring by a type of asexual reproduction. These offspring A) Are a result of the uniting of a male and a female gamete. B) Have cells that contain DNA found only in the female shark. C) Are considered to be a different species from the male parent. D) Have cells that contain genetic information from both parents. Show Answer Correct Answer: B) Have cells that contain DNA found only in the female shark. 19. A marathoner's leg muscles often feel heavy and prone to cramping after 20 or more miles. Which of the following is the best explanation for this? A) A marathoner's muscles cells cannot store glucose for use as energy. B) A marathoner's muscle cells contract when glucose reacts with oxygen. C) A marathoner's circulatory system cannot take in sufficient oxygen, and the muscle cells must switch to anaerobic respiration for energy. D) A marathoner's circulatory system takes in too much oxygen during a race, which causes muscle cramping. Show Answer Correct Answer: C) A marathoner's circulatory system cannot take in sufficient oxygen, and the muscle cells must switch to anaerobic respiration for energy. 20. Many animals have developed courtship behaviors. Males will often dance, swim, or sing in a particular way to attract a female. Males who are more successful at the courtship behavior will have a greater chance of having more offspring. This behavior is a result of A) Natural selection. B) Genetic engineering. C) Asexual reproduction. D) Gene manipulation. Show Answer Correct Answer: A) Natural selection. Next →Related QuizzesGenetics Tree Improvement Quiz 2Genetics Tree Improvement Quiz 3 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books