This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 10 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An organism that has two different alleles for a single trait is said to be ..... for that trait. A) Haploid. B) Diploid. C) Heterozygous. D) Homozygous. Show Answer Correct Answer: C) Heterozygous. 2. The trait of having dimples (D) is dominant to having no dimples (d). If heterozygous man for dimples and a woman with no dimples have a child, what is the probability the child will have dimples? A) 75%. B) 50%. C) 25%. D) 0%. Show Answer Correct Answer: B) 50%. 3. Human eye color, which is controlled by more than one gene, is an example of ..... A) Codominance. B) Incomplete dominance. C) Polygenic inheritance. D) Simple dominance. Show Answer Correct Answer: C) Polygenic inheritance. 4. The physical characteristics, or traits, of an individual organism is called the A) Genotype. B) Phenotype. C) Dominant. D) Recessive. Show Answer Correct Answer: B) Phenotype. 5. What is the definition of Homozygous? A) When one allele is dominant and one is recessive. B) When an individual has two sets of the same allele. C) When it is neither dominant or recessive. D) None of above. Show Answer Correct Answer: B) When an individual has two sets of the same allele. 6. A trait that is expressed whenever an allele for it is present is known as A) Recessive. B) Dominant. C) Mean. D) Scary. Show Answer Correct Answer: B) Dominant. 7. The hereditary material that controls all cellular activities is called - A) ATP. B) Chloroplast. C) DNA. D) Cytoplasm. Show Answer Correct Answer: C) DNA. 8. Which of the following is homozygous DOMINANT? A) Yy. B) Y. C) Yy. D) YY. Show Answer Correct Answer: D) YY. 9. A plant that has purple flowers is crossed with one that has white flowers. The offspring were half white and half purple. What were the genotypes of the parents? A) Pp x pp. B) Pp x Pp. C) PP x pp. D) PP x WW. Show Answer Correct Answer: A) Pp x pp. 10. Orange (A) flowers are dominant over yellow flowers (a). A orange flowered plant pollinates a yellow flowered plant. If half the offspring are orange and the other half are yellow, what are the genotypes of the parents? A) Aa x Aa. B) Aa x aa. C) AA x aa. D) Aa x aa. Show Answer Correct Answer: B) Aa x aa. 11. Gregor Mendel is the father of genetics. What type of plants did he study? A) Tea plants. B) Pepper plants. C) Pea plants. D) Tomato plants. Show Answer Correct Answer: C) Pea plants. 12. All offspring plants in the F1 generation were purple because purple is the ..... trait. A) Heterozygous. B) Homozygous. C) Dominant. D) Recessive. Show Answer Correct Answer: C) Dominant. 13. Physical characteristics are called the A) Gamete. B) Dominant. C) Genotype. D) Phenotype. Show Answer Correct Answer: D) Phenotype. 14. A female guinea pig homozygous dominant for black fur color is mated with a male homozygous for white fur color. In a litter of eight offspring, probability would predict there would be ..... A) 8 black guinea pigs. B) 4 black and 4 white guinea pigs. C) 2 black, 4 gray, and 2 white guinea pigs. D) 8 white guinea pigs. Show Answer Correct Answer: A) 8 black guinea pigs. 15. Gene maps are based on A) The frequencies of crossing-over between genes. B) Independent assortment. C) Genetic diversity. D) The number of genes in a cell. Show Answer Correct Answer: A) The frequencies of crossing-over between genes. 16. In pigs, having a curly tail (T) is dominant over having a straight tail (t). Parent 1:Heterozygous Parent 2:HeterozygousWhat are the genotypes of the offspring from the Punnett square? A) Tt, Tt. B) TT, Tt. tt. C) 1 TT, 2 Tt, 1 tt. D) 3 curly, 1 straight. Show Answer Correct Answer: C) 1 TT, 2 Tt, 1 tt. 17. At the end of telophase II, what is the result A) 2 haploid daughter cells. B) 2 diploid daughter cells. C) 4 haploid daughter cells. D) 4 diploid daughter cells. Show Answer Correct Answer: C) 4 haploid daughter cells. 18. Which of the following could be another term used for heterozygous? A) Purebred. B) Hybrid. C) Same. D) Clone. Show Answer Correct Answer: B) Hybrid. 19. Why is it necessary for meiosis to produce cells with fewer chromosomes? A) It saves energy for the organism to produce fewer chromosomes. B) Asexual reproduction requires fewer chromosomes than sexual reproduction. C) Organisms reproduce sexually by joining two tetrads together. D) If it did not, the chromosome number would double in each generation. Show Answer Correct Answer: D) If it did not, the chromosome number would double in each generation. 20. If a person has a genotype of RR, what do you know about their gametes (sex cells)? A) They will all carry the R allele. B) They will all carry RR. C) Some will carry R, some will carry r. D) They will all carry the r allele. Show Answer Correct Answer: A) They will all carry the R allele. ← PreviousNext →Related QuizzesPlant 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books