Global MCQ Practice

🌐 Total MCQ
🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books

Principles Of Genetics Quiz 39 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. If you made a Punnett square showing Gregor Mendel's cross between true-breeding tall plants and true-breeding short plants, the square would show that the offspring had
2. Alternate forms of genes are called
3. The physical characteristic of an organism .....
4. DNA is sometimes referred to as a ladder. Which two molecules make up the sides of the DNA ladder?
5. When phenotypes produces by both alleles are clearly expressed (such as chickens with black feathers and chickens with white feathers crossed produce black/white speckled feathers)
6. The study of how traits are passed form one generation to the next is called .....
7. If two white sheep produce a black offspring, the parent's genotypes for colour must be
8. A tall plant is crossed with a short plant what is the expected outcome? (TT x tt)
9. In guinea pigs, short hair (S) is dominant over long hair (s). A short-haired male and a short-haired female produce mostly short-haired offspring, but a few were long-haired. What are the genotypes of the parents?
10. Tay Sachs disease is a fatal genetic disorder. Children born with this disorder generally die before they are five years old. A couple has had three children who died of Tay Sachs. About this couple it can safely be assumed that:
11. Which term describes multiple genes affecting the phenotype of one trait?
12. If a dog has 20 chromosomes in its sperm cell, how many chromosomes would its son have in its tail cell?
13. Which best describes an inherited trait?
14. How much of your DNA do you inherit from your mom?
15. Which of these BEST describes the primary goal of meiosis?
16. If red (R) is dominant over white (r), which genotype will cause a white color?
17. Specific characteristic of an organism, such as body color, is called a
18. Which of the following are reasons why Mendel worked with pea plants?
19. Suppose that in barley plants, the allele for tall stalks is dominant over short stalks and the allele for wide leaves is dominant over thin leaves. What would be the best way to determine the genotype of a barley plant with a tall stalk and wide leaves?
20. Which Mendelian Law states that when an organism is hybrid for a pair of contrasting traits, the dominant trait is the one that is shown.
🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books