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Class 10 Science Chapter 9 Heredity And Evolution Quiz 2 (60 MCQs)

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1. In guinea pigs, the allele for short hair (H) is dominant and the allele for long hair (h) is recessive. When a dominant homozygous male and a heterozygous female are bred together, what is the predicted phenotypic ratio for the offspring?
2. How many different types of gametes will be produced by a plant having the genotype GgYYRR?
3. Mutations are a change in what?
4. Some dinosaurs had feathers but they cannot fly but birds have feathers and they can fly. What does this imply?
5. Physical traits or behaviors that enable an organism to survive natural conditions and thus evolve
6. Assertion:When pea plants (pureline) having round yellow seeds are crossed with pureline plants having wrinkled green seeds, then all pea plants obtained in F, generation bear wrinkled green seeds.Reason:Round and yellow seeds are dominant to wrinkled and green seeds.
7. What is a mutation?
8. In dogs, the allele for black fur (B) is dominant over the allele for white fur (b). A breeder breeds a heterozygous dog with a recessive homozygous dog. If the female dog has a litter of 12 puppies, predict how many will have black fur.
9. In peas, a pure tall (TT) is crossed with a pure short plant(tt). The ratio of pure tall plants to pure short plants in F2 generation is:
10. This leads to new types of behavior involving new uses of pre-existing organs.
11. Proved that except viruses, all living organisms have DNA as their genetic material.
12. Which of the following correctly describes the homologous structures?
13. In an organism that is produced by sexual method of reproduction a character is influenced by:
14. RNA does not contain
15. In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
16. Select the incorrect statement:A. frequency of certain genes in a population change over several generations resulting in evolution
17. Humans, chimpanzees, whales, and bats all have the same bones in their arms, fins, or wings.
18. A unit of genetic material that determines a trait
19. Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of reproductive barrier is this?
20. Sex-linked alleles are only found on the X chromosome.
21. Pair of chromosomes were first observed in the cells of .....
22. What is a useless structure called?
23. After Mendel died scientists began to recognize the importance of his ideas. They called him a name. What was that name?
24. A detectable trait or traits that result from the genotype such as color, shape, etc:
25. Natasha is suffering from a hereditary disease. So the doctor will give her treatment at:
26. In evolutionary terms, we have more in common with .....
27. Which of the following is dominant?
28. What is the probability that the male progeny will be a boy?
29. What is the photograph of chromosome called?
30. Both strands of DNA are used in the production of mRNA.
31. The passing of genetic traits from parents to offspring:
32. Write true or false for the following statements:In snails, individuals can change sex, indicating that sex is not genetically determined in them.
33. Which condition can be explained by Lamarckism?
34. What enzyme does transcription use?
35. Darwin has published book titled .....
36. The types of plants in genotypic ratio of Mendel's monohybrid cross experiment are
37. Homologous organs are organs that have:
38. Where does transcription take place?
39. Which of the following statements is correct?Statement 1:The proportion of a particular allele in a population is known as gene frequency.Statement 2:All the genes in a population of a species at a given time is known as gene pool.
40. A woman has type AB blood and her husband has type O blood. The doctor tells them their child has type O blood. She thinks this is very strange. Why?
41. Humans have two different sex chromosomes, X and Y. Based on Mendel's laws, a male offspring will inherit which combination of chromosomes?
42. The different forms of a gene
43. This is an inherited trait that helps an organism survive and reproduce in its environment.
44. Remains of ancient organisms are called
45. Explain the concept of adaptation.
46. Which type of reproduction maximises the rate of variation
47. Protein Synthesis means .....
48. What is heredity?
49. A pregnant woman has an equal chance of her baby being blood group A or blood group AB. Which one out of the four shows the possible genotypes of the woman and the father of her child?
50. A couple has 2 daughters. What is the possibility of their having a girl next time?
51. ..... is the observable set of characteristics of an organism
52. The allele that is fully expressed by itself:
53. Which of the following can be called a characteristic?
54. Homologous organs have
55. What does the law of segregation state?
56. The differences in the characters among the individuals of a species are called:
57. What are chromosomes?
58. Ruby crossed a tall pea plant with white flowers and a dwarf plant with violet flowers. She performed a .....
59. A student was trying to discover some things her hamster had learned. Which of these is a learned trait?
60. Who is considered the 'Father of Genetics'?
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