Heredity and Evolution: Variation, Inheritance & Mendel's Laws

Grade 9 Science — Heredity and Evolution: Variation, Inheritance & Mendel's Laws: 25 practice questions with instant scoring and explanations.

1. Variation in a population refers to:
2. Which of the following is an example of inherited trait?
3. Gregor Mendel conducted his experiments using:
4. In Mendel's experiments, the 'P generation' refers to:
5. A dominant trait is one that:
6. If 'T' represents tall and 't' represents short in a plant, 'Tt' is the:
7. The phenotype is:
8. According to Mendel's law of segregation:
9. If a pea plant has genotype AA, it will produce seeds that are:
10. When two heterozygous tall plants (Tt) are crossed, the ratio of tall to short offspring is:
11. A trait that skips a generation is likely:
12. Genes are located on:
13. An allele is:
14. If a child has blood type O, their parents could have blood types:
15. Genetic variation in a population is important for:
16. A homozygous dominant individual has genotype:
17. The law of independent assortment states that:
18. If both parents are heterozygous for brown eyes (Bb), the probability of a blue-eyed child (bb) is:
19. A mutation is:
20. Which of the following represents a monohybrid cross?
21. Genetic engineering involves:
22. The recessive phenotype appears when an organism:
23. Cross-pollination in flowers leads to:
24. Mendel's work was significant because it showed that:
25. If a trait appears in 75% of the F2 generation and 25% shows the alternate form, the dominant form is likely: