If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of
- A. codominance
- B. incomplete dominance
- C. mutation
- D. linkage
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
- A. Variation
- B. Survival of the fittest
- C. Use and disuse
- D. Competition
The crossing of individuals of the same species with different genetic characters is
- A. cross breeding
- B. polygenic inheritance
- C. non-disjunction
- D. inbreeding
The number of alleles controlling blood groups in humans
- A. 3
- B. 4
- C. 5
- D. 2
During blood transfusion, agglutination may occur as a result of the reaction between
- A. contrasting antigens and antibodies
- B. two different antigens
- C. two different antibodies
- D. similar antigens and antibodies
