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Principles Of Genetics Quiz 20 (30 MCQs)

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1. The letters that help visualize a pea plant's genetic makeup are called .....?
2. Pink snapdragons are an example of .....
3. Which of the following is a heterozygous dominant genotype?
4. For a second generation, Mendel allowed the F1 (first filial) to self-pollinate to produce F2 (second filial). The recessive traits reappeared in the F2 plants but only 1/4 times. What genetic Principle or Law was displayed in this case?
5. What happens in meiosis during telophase II?
6. Snapdragons, a flowering plant popular with gardeners, can have red, white, and pink colored petals. When a snapdragon with red petals (RR) is crossed with a snapdragon having white (rr) petals, the offspring have pink petals. The pink coloration (Rr) is a phenotype in between the red and white parental phenotypes. What is this kind of inheritance pattern called?
7. Which term means one copy of chromosomes (N)?
8. Having two of the same genes for the trait (sometimes called purebred).
9. A Punnett square determines
10. Which of the following alleles is homozygous recessive?
11. A mutation is a change in
12. Which of the following statements is true regarding blood types?
13. Entire set of genetic information that an organism carries in its DNA
14. In birds the alleles for color show codominance. One allele is blue and one allele is white. What would the heterozygote look like?
15. If a pea plant that is heterozygous for round, yellow peas (RrYy) is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas (RRYy), how many different phenotypes are their offspring expected to show?
16. A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be
17. A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
18. Mitosis involves this many divisions of the nucleus.
19. Where would genetic drift most likely occur?
20. Height in humans is an example of
21. In gigantoraptors, green scales are dominant to red scales. What is the genotype of gigantoraptors that produce red scales?
22. What did Gregor Mendel discovery in the results of his first experiment?
23. If I cross a green pea plant (G) with a yellow pea plant (y), what genotypes will the plants be?
24. In a cross of Bb x Bb, what fraction of the offspring can be expected to express dominant alleles?
25. Incomplete dominance is also called
26. What did Gregor Mendel use to discover the principles that rule heredity?
27. Describes the patterns of inheritance and presentation when a gene mutation is present on a sex chromosome rather than a non-sex chromosome
28. What does a Punnett square show?
29. Heterozygous condition wherein the allele that is regarded as dominant completely masks the effect of the allele that is recessive
30. What is the result of meiosis?
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