This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 48 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The section of a chromosome (chemical factors) that determine traits are called A) Alleles. B) Traits. C) Genes. D) Characters. Show Answer Correct Answer: C) Genes. 2. Genetic make-up of an organism is known as its A) Gamete. B) Dominant. C) Genotype. D) Phenotype. Show Answer Correct Answer: C) Genotype. 3. Mendel selected which of the following traits for his studies A) Stem length (tall or dwarf), flower position (apical or axial). B) Flower colour (purple or white), seed shape (round or wrinkled). C) Colour of pod (green or yellow), cotyledon colour (yellow or green). D) All of these. Show Answer Correct Answer: D) All of these. 4. What type of gene mutation has occurred here? Normal-AGA-TTC-ATA-GCGMutant-AGA-TTC-AAT-AGC-G A) Deletion frameshift. B) Insertion frameshift. C) Substitution. D) Nonsense. Show Answer Correct Answer: B) Insertion frameshift. 5. Organisms that have two identical alleles for a particular trait are said to A) Hybrid. B) Homozygous. C) Heterozygous. D) Dominant. Show Answer Correct Answer: B) Homozygous. 6. How is Huntington's Disease inherited? A) Environmental problems. B) Recessive Trait. C) Dominant trait. D) Problems during pregnancy. Show Answer Correct Answer: C) Dominant trait. 7. A homozygous recessive genotype is shown by which of the following? (3B1) A) TT. B) Tt. C) TS. D) Tt. Show Answer Correct Answer: B) Tt. 8. Fertilization A) Process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell. B) Separation of alleles during gamete formation. C) Offspring of crosses between parents with different traits. D) Process in sexual reproduction in which male and female reproductive cells join to form a new cell. Show Answer Correct Answer: D) Process in sexual reproduction in which male and female reproductive cells join to form a new cell. 9. In pea plants, green is dominant to yellow. A green pea plant (Gg) is crossed with a yellow pea plant (gg). What are all the possible genotypes that result from this set of parents? A) GG, Gg, gg. B) Gg, gg. C) Gg. D) Gg. Show Answer Correct Answer: B) Gg, gg. 10. A trait that is always expressed if present is ..... A) Recessive. B) Dominant. C) Strong. D) True. Show Answer Correct Answer: B) Dominant. 11. Results from a crosses between parents with different traits A) Gamete. B) Gene. C) Allele. D) Hybrid. Show Answer Correct Answer: D) Hybrid. 12. The color black is dominant in guinea pigs. The phenotypes of homozygous black guinea pigs and heterozygous black guinea pigs are: A) Black. B) Gray. C) BB and Bb. D) White. Show Answer Correct Answer: A) Black. 13. Through conducting many experiments with pea plants, Gregor Mendel discovered three basic principles that guide the inheritance of traits. Which concept is a part of his explanation? A) Codominance. B) Dominance. C) Multiple alleles. D) Sex linkage. Show Answer Correct Answer: B) Dominance. 14. In rats, black coat color (B) is dominant to white coat color (b). When a black rat was crossed with a white rat, some white offspring occurred. What was the genotype of the black rat? A) BB. B) Bb. C) Bb. D) B. Show Answer Correct Answer: B) Bb. 15. Sex-Linked traits affect more A) Males. B) Females. C) They affect females and males equally. D) There is no such thing as a sex-linked trait. Show Answer Correct Answer: A) Males. 16. The letter P in a "P" Generation stands for: A) Probability. B) Puppy. C) Punnet. D) Parent. Show Answer Correct Answer: D) Parent. 17. Likelihood that a particular event will occur is known as A) Fact. B) Guess. C) Probability. D) None of the above. Show Answer Correct Answer: C) Probability. 18. Mendel's principles of genetics apply to which organisms? A) Pea plants only. B) Plants only. C) Animals only. D) All organisms. Show Answer Correct Answer: D) All organisms. 19. What are sex cells that contain only one set of chormosomes? A) Gametes. B) Zygotes. C) Sperm. D) Eggs. Show Answer Correct Answer: A) Gametes. 20. In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. Heterozygous individuals are grey (Bb). Cross a black fowl with a white fowl. What is the phenotype ratio? A) 4 black:0 grey:0 white. B) 2 black:2 grey:0 white. C) 0 black:4 grey:0 white. D) 0 black:2 grey:2 white. Show Answer Correct Answer: C) 0 black:4 grey:0 white. ← PreviousNext →Related QuizzesPrinciples Of Genetics Quiz 1Principles Of Genetics Quiz 2Principles Of Genetics Quiz 3Principles Of Genetics Quiz 4Principles Of Genetics Quiz 5Principles Of Genetics Quiz 6Principles Of Genetics Quiz 7Principles Of Genetics Quiz 8Principles Of Genetics Quiz 9Principles Of Genetics Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books