Biology questions
20584 published questions with worked solutions.
- Individuals with Turner's syndrome have
- Which would most probably be the genetic make-up of the parents of a colourblind daughter?
- Which statement about Y-chromosome is not true?
- Colour-blindness is a disease in which the factor is usually transmitted to children by woman. It is because the factor is...
- The gene for haemophilia is located on the X-chromosome. It is impossible for a
- Heredity is
- During Mendel's investigation, it was first time that __A__ and __B__ were applied in biology. Here A and B refers to
- The proportion of plants that were dwarf and tall in F_2-generation of Mendel experiment was
- The major reason for the success of Mendelian experiments was
- Which factor expresses itself in homozygous and even in heterozygous condition?
- Alleles can be similar as in the case of __A__ like __B__ or can be dissimilar as in the case of __C__ like __D__. Choose the...
- If heterozygous dominant (Tt) crossed with homozygous dwarf plant, then the percentage of progeny having dwarf character is
- Which contributed to Mendel's success? 1. Selection of pea plant. 2. Knowledge of history. 3. One character at one time. 4. His...
- Match the following columns. Column I | Column II A. Test cross | 1. 9:3:3:1 B. Monohybrid cross | 2. T t x t t C. Back cross |...
- Mendel's law were true for situation in which
- Which principle/law has been called the 2^ nd law of inheritance?
- What is genotypic ratio in a dihybrid cross?
- Chances of segregation of alleles of gametes are
- If male is TT and female is tt, then they contribute pollen and egg respectively with
- The best method to determine the homozygosity and heterozygosity of an individual is