This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 6 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. States that allele pairs separate or segregate during gamete formation and randomly unite at fertilization A) Sex-linked. B) Dominance. C) Segregation. D) Independent assortment. Show Answer Correct Answer: C) Segregation. 2. Which phrase best describes the outcome of meiosis? A) Results in diploid cells. B) Occurs in body cells. C) Results in genetically identical cells. D) Produces haploid gametes. Show Answer Correct Answer: D) Produces haploid gametes. 3. A father is heterozygous for his type A blood and a mother is heterozygous for her type B blood. What percentage of their offspring would you expect to have? A) 50% all blood types. B) 25% Type A, 50% Type B, 25% Type O. C) 50% Type A, 50% Type B. D) Type A 25%, Type B 25%, Type AB 25%, Type O 25%. Show Answer Correct Answer: D) Type A 25%, Type B 25%, Type AB 25%, Type O 25%. 4. The X-linked recessive trait of color-blindness is present in 5% of males. If a mother who is a carrier and father who is unaffected plan to have children, what is the probability of having a male who is color-blind? A) 50%. B) 25%. C) 75%. D) 1%. Show Answer Correct Answer: A) 50%. 5. In human beings, which parent determines the sex of the offspring A) Mother. B) Father. C) Neither. D) Both. Show Answer Correct Answer: B) Father. 6. Which pair of alleles shown below are both RECESSIVE ALLELES? A) AA. B) Aa. C) Aa. D) None of above. Show Answer Correct Answer: B) Aa. 7. In a punnet square where are the parent alleles written? A) Top and inside the boxes. B) Only on the left and right side of the boxes. C) Outside of the boxes (top and left side). D) All on the top side of the boxes. Show Answer Correct Answer: C) Outside of the boxes (top and left side). 8. What law states that in Tt the person will only show the dominant allele A) Law of segregation. B) Law of independent assortment. C) Law of dominance. D) Law of punnett squares. Show Answer Correct Answer: C) Law of dominance. 9. In a certain species of insect, eye color is controlled by a single gene. The dominant allele (E) codes for black eyes, while the recessive allele (e) codes for red eyes. How could two parents with black eyes have a red-eyed female offspring? A) The parents are heterozygous for eye color, so their offspring must inherit the recessive allele from both parents. B) The parents are homozygous recessive for eye color, so all of their offspring will inherit red eyes. C) Since the offspring is female, it did not inherit any Y chromosomes with the gene for black eyes, and thus has red eyes. D) Since the offspring is heterozygous for eye color, environmental factors are causing it to produce more red pigment than black and thus has red eyes. Show Answer Correct Answer: A) The parents are heterozygous for eye color, so their offspring must inherit the recessive allele from both parents. 10. In a species of mouse, brown fur (B) is dominant over white fur (b). If a heterozygous brown mouse is crossed with a white-colored mouse, what would be true of their possible offspring? A) 100% BB. B) 25% BB, 25% bb, and 50% Bb. C) 50% Bb and 50% bb. D) 75% BB and 25% Bb. Show Answer Correct Answer: C) 50% Bb and 50% bb. 11. Micrograph of the complete diploid set of chromosomes grouped together in pairs, arranged in order of decreasing size A) Karyotype. B) Autosome. C) Genomics. D) Genome. Show Answer Correct Answer: A) Karyotype. 12. Which type of plant did Gregor Mendel use to conduct a large portion of his research? A) Rose bush. B) Tomato plant. C) Pea plant. D) None of above. Show Answer Correct Answer: C) Pea plant. 13. What is the major difference between a genotype and a phenotype? A) Genotype is the physical make up, phenotype is the genetic makeup. B) Genotype is the same as phenotype. C) Genotype is the genetic make up, phenotype is the physical make up. D) IDK. Show Answer Correct Answer: C) Genotype is the genetic make up, phenotype is the physical make up. 14. A pea plant is heterozygous for height (Tt) and it is crossed with a homozygous short (tt) plant. Use a Punnett square to determine the probability of one of their offspring being short. A) 100%. B) 75%%. C) 50%. D) 25%. Show Answer Correct Answer: C) 50%. 15. Allele A) Sex cells. B) One of the different forms of a gene. C) One of Mendel's principles that states that genes for different traits can segregate independently during the formation of gametes. D) Process in sexual reproduction in which male and female reproductive cells join to form a new cell. Show Answer Correct Answer: B) One of the different forms of a gene. 16. Brown hair (B) is dominant to blonde hair (b). Cross a homozygous dominant hair colored person with a homozygous recessive hair colored person. What percentage of their children will have brown hair? A) 0%. B) 25%. C) 50%. D) 100%. Show Answer Correct Answer: D) 100%. 17. Round (R) seeds are dominant to wrinkled (r) seeds.What is the genotype for a homozygous dominant offspring? A) RR. B) Rr. C) Rr. D) None of above. Show Answer Correct Answer: A) RR. 18. A person heterozygous for wet earwax (Ww) mates with a person homozygous recessive for dry earwax. What is the chance their baby is heterozygous? A) 0%. B) 25%. C) 50%. D) 100%. Show Answer Correct Answer: C) 50%. 19. Chromosomes form tetrads during A) Metaphase I of meiosis. B) Interphase. C) Prophase I of meiosis. D) Anaphase II of meiosis. Show Answer Correct Answer: C) Prophase I of meiosis. 20. Mendel's Law of independent assortment A) The principle that assorted alleles are independant. B) The principle that allele pairs for different genes separate independently in meiosis, so the inheritance of one trait generally does not influence the inheritance of another trait. C) Principle that independent organisms can't assort their genes to change their genetic material, meaning an organism is born only with the traits it inherits. D) None of above. Show Answer Correct Answer: B) The principle that allele pairs for different genes separate independently in meiosis, so the inheritance of one trait generally does not influence the inheritance of another trait. ← 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 7Principles Of Genetics Quiz 8Principles Of Genetics Quiz 9Principles Of Genetics Quiz 10Principles Of Genetics Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books