Incomplete dominance is present in
(1) Snapdragon flower
(2) Dog flower
(3) Antirrhinum flower
(4) All of the above
What is the F2 phenotypic ratio in cases of incomplete dominance?
1. 1 : 1
2. 3 : 1
3. 1 : 2 : 1
4. 1 : 1
What does Blending inheritance refers to?
(1) Mixed characters in an offspring
(2) Dominant character
(3) Recessive character
(4) Dominant & recessive character
Presence of more than two alleles for a gene is known as
1. Polygenic inheritance
2. Multiple allelism
3. Co-dominance
4. Incomplete dominance
In the case of co-dominance, the F1 generation resembles:
(1) Dominant parent
(2) Recessive parent
(3) Both the parents
(4) None of the parents
In human ABO group system ________ different alleles allow the possibility of _______ different types of genotypes in population.
1. 3, 4
2. 2, 4
3. 3, 6
4. 6, 3
Which of the following terms best describes when the phenotype of the heterozygote differs from the phenotypes of both homozygotes?
(1) Incomplete dominance
(2) Multiple alleles
(3) Codominance
(4) Epistasis
The unmodified (functioning) allele which represents the original phenotype is the allele and the modified allele is the allele.
1. (a) Recessive, (b) generally, (c) dominant
2. (a) dominant, (b) always, (c) recessive
3. (a) dominant, (b) generally, (c) recessive
4. (a) recessive, (b) always, (c) dominant
A pure tall - red flower plant was crossed with dwarf - white-flowered plant. In , all were tall with pink flowers. What is the percentage probability of getting red and pink-flowered plants respectively?
1. 25% and 50%
2. 50% and 25%
3. Zero and 75%
4. Zero and 50%
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red, and pink flowers. Choose the incorrect statement from the following:
1. | Law of Segregation does not apply in this experiment. |
2. | This experiment does not follow the Principle of Dominance. |
3. | The pink colour in F1 is due to incomplete dominance. |
4. | Ratio of F2 is 1/4(red):2/4(pink):1/4(white). |