Biology questions
20584 published questions with worked solutions.
- Consider the following statement regarding ABO blood group in human. 1. It is controlled by multiple allele. 2. It shows...
- Match the following columns. Column I | Column II A. Gregor Mendel | 1. Chromosomal theory of inheritance B. Sutton and Boveri |...
- Some genomic representation of skin color are given below 1. AA bb cc 2. AA bb cc 3. AA BB CC 4. aa bb cc Which of the option is...
- Four children belonging to the same parents have the following blood groups A, B, AB and O. Hence the genotypes of the parents are
- Which of the following condition represents a case of codominant genes?
- In which one of the following, complementary gene interaction ratio of 9:7 is observed?
- Match the genetic phenomena with their respective ratios. Column I | Column II A. Inhibitory gene ratio | 1. 9:3:4 B....
- If two pea plant having red (dominant) colored flowers with unknown genotype are crossed, 75% of the flowers are red and 25% are...
- Mendelian principles are not applicable in case of
- The phenomenon of a single gene regulating several phenotypes is called
- Grain color in wheat is determined by three pairs of polygene. Following the cross AABBCC (dark color) × aabbcc (light color) in...
- Genes when present in homozygous condition results in non-viable progeny, the factor responsible for such conditions are
- Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio
- Pure red flowers was crossed with pure white flowers. Red is dominant. After selfing of F_1-generation, the proportions of plants...
- Multiple phenotype is seen in
- Match the following columns. Column I – Column II A. ABO blood groups – 1. Dihybrid cross B. Law of segregation – 2. Monohybrid...
- In Drosophila, gene for white eye mutation is also responsible for depigmentation of body parts. Thus, a gene that controls...
- It is easier to study polygenic inheritance of character in plants than in animals because in the former
- In polygenic inheritance, the parents fall into two distinct classes but the F_1-generation shows intermediate characters because...
- Linkage was first suggested by