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Heredity – 5 MCQ Tests
Test 1 – Heredity
1. Which branch of biology deals with heredity and variation?
2. What term did Mendel use for the units now known as genes?
3. The genetic constitution of an organism is called its:
4. The resemblance of individuals to their progenitors is called:
5. Which trait did Mendel observe to be recessive in pea plants?
6. Which chromosome set represents a normal human male?
7. How many chromosomes are present in a normal human cell?
8. Which chromosome in a human zygote determines maleness?
9. A zygote that inherits an X chromosome from the father develops into a:
10. The sex of a human child is determined by the type of ______ provided by the father.
11. Which term describes the observable characteristics of an organism?
12. When a gene exists in more than one form, the different forms are called:
13. A dominant allele is expressed in:
14. According to Mendel's law of segregation, germ cells receive:
15. Mendel's laws of inheritance are primarily applicable to:
Test 2 – Heredity
1. Which organs have a similar basic structure but may perform different functions?
2. Which pair represents homologous structures?
3. Which pair represents analogous structures?
4. Carrot and radish are considered homologous because both are:
5. Wings of insects and wings of birds are analogous because they:
6. The presence of homologous organs in organisms indicates:
7. Analogous organs are characterized by:
8. Which of these is an example of a homologous structure?
9. Which structures are related to common ancestry?
10. Analogous structures are similar mainly because they:
11. What is the functional unit of inheritance?
12. Where are genes located?
13. Mendel selected how many contrasting characters of pea plants for his experiments?
14. Which plant did Mendel mainly use for his inheritance experiments?
15. A monohybrid cross deals with inheritance of:
Test 3 – Heredity
1. A dihybrid cross deals with inheritance of:
2. The phenotypic ratio 9:3:3:1 is characteristic of a:
3. A true dihybrid genotype is:
4. The offspring produced by crossing two parents are called:
5. The laws proposed by Mendel are known as:
6. Traits acquired during an organism's lifetime are called:
7. Acquired characters are generally not inherited because they:
8. Which of the following is an example of continuous variation?
9. Differences between organisms of the same species are called:
10. Which process can produce a sudden change in genetic material?
11. Accumulation of variation can increase the chances of survival when:
12. New species may form when there are significant changes in:
13. The basis for differentiating two groups as separate species is:
14. Selection of individuals with desired characters by humans is called:
15. According to the source, birds are understood in evolution as having evolved from:
Test 4 – Heredity
1. Which statement correctly describes a dominant trait?
2. Pure-breeding plants are generally:
3. Why was pea plant considered suitable for Mendel's hybridisation experiments?
4. A tall plant that always produces tall offspring is best represented by:
5. Mendel proposed that every character is controlled by:
6. The number of sex-chromosome pairs in a human zygote is:
7. A human female normally has which sex chromosomes?
8. A human male normally has which sex chromosomes?
9. The phenotype of an organism results from:
10. Mendelism is related to:
Test 5 – Heredity
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