This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 49 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A heterozygous tall pea plant is crossed with a short plant. The probability that an F1 plant will be tall is A) 25%. B) 50%. C) 75%. D) 100%. Show Answer Correct Answer: B) 50%. 2. What does the prefix homo- in homozygous mean? A) Same. B) Different. C) Dating. D) Humans. Show Answer Correct Answer: A) Same. 3. What does a Punnent square determine? A) The genotype of an offspring. B) The phenotype of an offspring. C) How likely a genotype will appear in an offspring. D) How many offspring there will be. Show Answer Correct Answer: C) How likely a genotype will appear in an offspring. 4. In chickens, feather color is codominant. If a black chicken BB is mated with one that is black and white (BW) what are the chances of having a chicken that is black and white? A) 50%. B) 0%. C) 25%. D) 100%. Show Answer Correct Answer: A) 50%. 5. Reduction division that produces gamete A) Mitosis. B) Meiosis. C) Replication. D) Translation. Show Answer Correct Answer: B) Meiosis. 6. Multiple allelism is due to A) Presence of two alleles in population. B) Presence of more than two alleles in population. C) None of the above. D) All the above. Show Answer Correct Answer: B) Presence of more than two alleles in population. 7. Two heterozygous people marry. Each has a dominant allele C for curly hair and a recessive allele c for straight hair. Using a Punnette square, determine the phenotypic ratio, curly hair:straight hair, in their children A) 3:1. B) 9:3:3:1. C) 1:3:1. D) 1:2:1. Show Answer Correct Answer: A) 3:1. 8. What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)? A) Ry. B) RrYy. C) RrYy. D) Rryy. Show Answer Correct Answer: D) Rryy. 9. In humans, blood types exhibit both dominance, codominance, and multiple alleles. The following genotypes are listed for each blood type.AA or AO= Type A OO= Type O BB or BO= Type BAB= Type AB ..... Parent 1:Homozygous for Type A BloodParent 2:Type O BloodWhat is the probability of getting type A? A) 0%. B) 25%. C) 50%. D) 100%. Show Answer Correct Answer: D) 100%. 10. Homozygous is when ..... A) The alleles are the same. B) The alleles are different. C) The alleles are absent. D) The alleles are present. Show Answer Correct Answer: A) The alleles are the same. 11. When the genotype consists of a dominant and a recessive allele, the phenotype will be like the ..... allele. A) Dominant. B) Recessive. C) Both. D) Neither. Show Answer Correct Answer: A) Dominant. 12. An allele represented by a lower case letter. The allele that masked or hidden. A) Recessive. B) Dominant. C) Little. D) Large. Show Answer Correct Answer: A) Recessive. 13. Why did Mendel conduct experiments on pea plants A) They have many different characteristics that have two distinct forms. B) They are self-pollinating (can fertilize themselves) because each flower has both male and female parts. C) They are "low maintenance" plants-Easy to care for-Rapid life cycle. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. Identify the homozygous recessive genotype: A) RR. B) Rr. C) Rr. D) None of above. Show Answer Correct Answer: B) Rr. 15. If two parents who are homozygous recessive for a certain trait are crossed, what is the probability of having a child who does not have their trait? A) 0.5 (50%). B) 0.25 (25%). C) 1 (100%). D) 0. Show Answer Correct Answer: D) 0. 16. In fruit flies, eye color is a sex linked trait. Red is dominant to white. What would be the percentages of offspring of a cross of a white eyed female with a red-eyed male? A) 1 female white eyes, 1 female red-eyes, 1 male white eyes, 1 male red-eyes. B) 2 female red eyes, 2 males white eyes. C) 2 female white eyes, 2 males red eyes. D) 2 female red eyes, 1 male red eyes, 1 male white eyes. Show Answer Correct Answer: B) 2 female red eyes, 2 males white eyes. 17. An example of alleles is: A) AB and Tt. B) TT and Tt. C) T and t. D) X and Y. Show Answer Correct Answer: B) TT and Tt. 18. Different forms of a gene. A) Heterozygous. B) Allele. C) Homologous. D) Genetics. Show Answer Correct Answer: B) Allele. 19. What is an advantage of sexual reproduction? A) Allows genetic variation. B) Only needs one parent. C) Offspring are exact copies of parent. D) None of above. Show Answer Correct Answer: A) Allows genetic variation. 20. Having the same alleles for a trait A) Homozygous. B) Heterozygous. C) Phenotype. D) Gentoype. Show Answer Correct Answer: A) Homozygous. ← 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