This quiz works best with JavaScript enabled. Home > Agriculture > Plant > Genetics > Principles Of Genetics – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 5 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the term for the different "flavors" or versions of genes? A) Chromosomes. B) Ally. C) Alleles. D) None of above. Show Answer Correct Answer: C) Alleles. 2. Who is known as father of genetics? A) M.S Swaminathan. B) Gregor Mendel. C) Augustinian friar. D) Norman Borlaug. Show Answer Correct Answer: B) Gregor Mendel. 3. Normal red blood cells slide easily through narrow blood vessels. In sickle cell disease, many red blood cells change to a crescent shape like a slender moon. Crescent-shaped blood cells cause blockages in blood vessels. These blockages decrease the transport of oxygen. People with sickle cell disease often have sharp pains due to the lack of oxygen in parts of the body.Sickle cell disease is caused by an abnormal type of red blood cell gene inherited by the parents. What is the name for different forms of the same gene? A) Recessive genes. B) Dominant genes. C) Traits. D) Alleles. Show Answer Correct Answer: D) Alleles. 4. Which of the following are shown in a karyotype? A) Homologous chromosomes. B) Sex chromosomes. C) Autosomes. D) All of these. Show Answer Correct Answer: D) All of these. 5. Examples are:Temperature, Time and pH A) Pedigree. B) Heredity. C) Environmental factors. D) Codominance. Show Answer Correct Answer: C) Environmental factors. 6. Situations in which one allele for a gene is not completely dominant over another allele for that gene are called A) Multiple alleles. B) Incomplete dominance. C) Polygenic inheritance. D) Multiple genes. Show Answer Correct Answer: B) Incomplete dominance. 7. A scientist is observing pea plant seed color and seed shape. This data will be used to predict future offspring. What tool should be used to show the data being tracked? A) Pedigree. B) Monohybrid. C) Dihybrid. D) Graph. Show Answer Correct Answer: C) Dihybrid. 8. When one allele is not dominant over the other, the heterozygous phenotype is a blend of the two (such as pink flowers from a red flower parent and white flower parent) A) Incomplete Dominance. B) Codominance. C) Multiple Alleles. D) Polygenic Traits. Show Answer Correct Answer: A) Incomplete Dominance. 9. Which of the following would produce a recessive phenotype? A) Rr. B) Ww. C) Hh. D) BB. Show Answer Correct Answer: C) Hh. 10. The study of heredity is known as A) Biology. B) Law of Heredity. C) Genetics. D) Hereditology. Show Answer Correct Answer: C) Genetics. 11. A trait that is masked unless 2 copies are present is ..... A) Hidden. B) Dominant. C) Recessive. D) Weak. Show Answer Correct Answer: C) Recessive. 12. Another name for sex cells or reproductive cells is A) Genes. B) Alleles. C) Gametes. D) Phenotype. Show Answer Correct Answer: C) Gametes. 13. Which statement does not describe sexual reproduction A) Male and female aphids combine genetic material. B) Female aphids produce young by themselves. C) Young aphids have a mother and a father. D) It produces aphids better to respond to their environment. Show Answer Correct Answer: B) Female aphids produce young by themselves. 14. What is a Genotype? A) The genetic make up of a trait. B) A type of characteristic that you inherit from your parents. C) A type of mutation. D) A physical characteristic of a trait. Show Answer Correct Answer: A) The genetic make up of a trait. 15. Human females produce egg cells that have A) One X and one Y chromosome. B) One X or one Y chromosome. C) Two x chromosomes. D) One x chromosome. Show Answer Correct Answer: D) One x chromosome. 16. When a red and white individual produce pink offspring it is called: A) Codominance. B) Multiple alleles. C) Incomplete dominance. D) Epistasis. Show Answer Correct Answer: C) Incomplete dominance. 17. Which of the following genetic screening techniques is BEST used to see if someone has trisomy #2? A) Karyotype. B) Pedigree. C) Punnett square. D) Gel electrophoresis. Show Answer Correct Answer: A) Karyotype. 18. When Gregor Mendel crossed true-breeding tall plants (TT) with true-breeding short plants (tt), all the offspring were tall because A) The allele for tall plants is recessive. B) The allele for short plants is dominant. C) The allele for tall plants is dominant. D) None of above. Show Answer Correct Answer: C) The allele for tall plants is dominant. 19. Whats an Allele? A) An individual who carries one allele for a recessive trait and does not exhibit the trait. B) The genes that an organism carries for a particular trait. C) Alternative versions of a gene. D) Manifested structure, functions, and behaviors of an individual. Show Answer Correct Answer: C) Alternative versions of a gene. 20. What is the process by which the number of chromosomes per cell is cut in half through a process of separating homologous chromosomes? A) Mitosis. B) Meiosis. C) Replication. D) Crossing-over. Show Answer Correct Answer: B) Meiosis. 21. What are the genotypes for type A blood? A) OO, AA. B) AO, O. C) AA, O. D) IAIA, IAi. Show Answer Correct Answer: D) IAIA, IAi. 22. Principle/Law of Segregation is defined as ..... A) Some alleles are dominant over others. B) Allele pairs separate during gamete formation and randomly unite at fertilization. C) During gamete formation genes for different traits separate without influencing each other's inheritance. D) None of above. Show Answer Correct Answer: B) Allele pairs separate during gamete formation and randomly unite at fertilization. 23. Dominant alleles are represented by a(n) A) Upper case letter. B) Lower case letter. C) Punnett square. D) Phenotype. Show Answer Correct Answer: A) Upper case letter. 24. Mendel ..... pea plants to study traits. A) Cut. B) Naturally pollinated. C) Crossed. D) None of above. Show Answer Correct Answer: C) Crossed. 25. An assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true A) Hypothesis. B) Theory. C) Evidence. D) Law. Show Answer Correct Answer: A) Hypothesis. 26. What does heterozygous mean? A) An organism that has the same genes for a trait (TT or tt). B) An organism that has different genes for a trait (Tt). C) When neither gene is fully dominant; offspring is a mixture of both. D) The different forms of a trait (hair color$\rightarrow$ brown, blonde, red. Show Answer Correct Answer: B) An organism that has different genes for a trait (Tt). 27. In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. Heterozygous individuals are grey (Bb). What is the genotype ratio for a cross between a grey fowl and a white fowl? A) 2 BB:2 Bb:0 bb. B) 1 BB:2 Bb:1 bb. C) 0 BB:4 Bb:0 bb. D) 0 BB:2 Bb:2 b. Show Answer Correct Answer: D) 0 BB:2 Bb:2 b. 28. G = green, g = yellowThe genotype for a yellow plant is ..... A) GG. B) Gg. C) Gg. D) All of the choices result in yellow. Show Answer Correct Answer: B) Gg. 29. If you crossed two heterozygous plants, how many of the offspring will also be heterozygous? A) All. B) Half. C) 3/4. D) 1/4. Show Answer Correct Answer: B) Half. 30. In a pedigree, a SQUARE represents a(an) A) Female. B) Adult. C) Male. D) Child. Show Answer Correct Answer: C) Male. ← PreviousNext →Related QuizzesPlant QuizzesAgriculture QuizzesPrinciples Of Genetics Quiz 1Principles Of Genetics Quiz 2Principles Of Genetics Quiz 3Principles Of Genetics Quiz 4Principles Of Genetics Quiz 6Principles Of Genetics Quiz 7Principles Of Genetics Quiz 8Principles Of Genetics Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books