In snapdragon (Antirrhinum), a cross between red and white flowers produces pink flowers. This is an example of: MCQ with Answer and Explanation

In snapdragon (Antirrhinum), a cross between red and white flowers produces pink flowers. This is an example of:
A. Complete dominance
B. Epistasis
C. Codominance
D. Incomplete dominance
Answer: Option D
Solution (By JKExamLibrary)
Incomplete dominance occurs when the phenotype of the heterozygote is an intermediate blend of the two homozygous phenotypes. In snapdragons, a cross between a homozygous red (RR) and homozygous white (rr) flower produces heterozygous pink (Rr) flowers. Neither allele is completely dominant over the other, resulting in a blended phenotype.

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Practice More Biology Questions

Question #1
The technique used to analyze the entire protein complement of a cell is:
A. Proteomics
B. Genomics
C. Transcriptomics
D. Metabolomics

Correct Answer: Option A


Explanation:
Proteomics involves large-scale study of proteins, their structures, and functions. Genomics is DNA, transcriptomics RNA, metabolomics metabolites.

This question belongs to: Science Biology
Question #2
Consider the following statements about the human heart:
1. The bicuspid valve is on the left side.
2. The tricuspid valve is on the right side.
3. The pulmonary valve prevents backflow into the right ventricle.
Which of the above is/are correct?
A. 1 and 3 only
B. 2 and 3 only
C. 1, 2, and 3
D. 1 and 2 only

Correct Answer: Option C


Explanation:
All three are correct: bicuspid (left AV), tricuspid (right AV), pulmonary valve at right ventricle exit.

This question belongs to: Science Biology
Question #3
Which of the following is an example of an insectivorous plant?
A. Drosera
B. Rhizobium
C. Cuscuta
D. Monotropa

Correct Answer: Option A


Explanation:
Drosera (sundew) is an insectivorous plant that captures insects with sticky tentacles on leaves to supplement nitrogen in nutrient-poor soils. Cuscuta is a parasitic plant, Monotropa is saprophytic, Rhizobium is a bacterium, not a plant. Insectivorous plants include pitcher plant (Nepenthes), Venus flytrap, and bladderwort. They are autotrophic but supplement nitrogen.

This question belongs to: Science Biology