Questions
A cross between hybrid and either of any parent is called
- test cross
- reciprocal cross
- monohybrid cross
- back cross
If the frequency of a dominant phenotype in a stable population is 75%, the frequency of recessive allele will be
- 25%
- 50%
- 100%
- 10%
Which of the following is present in RNA, but not in DNA?
- Adenine
- Uracil
- Thymine
- Guanine
A sexually produced individual is called
- clone
- gamete
- progeny
- all of the above
Haemophilia is a hereditary disease carried by
- females and expressed by females
- females and expressed by males
- males and expressed by females
- males and expressed by males
Independent assortment of Mendel was proved by
- monohybrid cross
- dihybrid cross
- incomplete dominance
- back cross
A colour-blind person has difficulty in seeing
- all colours
- red colour only
- red, green and pale tints
- violet and blue colours
If father and mother possess the blood group A, their children can have the blood group
- A
- AB
- A or B
- A or O
In peas, tall plant trait is dominant over dwarf. If a heterozygous for tall is crossed with one homozygous for dwarf, what will be the appearance of the offspring of a cross F1?
- All tall
- All dwarf
- 50% tall and 50% dwarf
- 75% tall and 25% dwarf
One-half of a DNA helix is arranged in the order: adenine, guanine, thymine and cytosine. In what order, is the other half of the spiral arranged (starting from the same point)?
- Adenine, cytosine, thymine and guanine
- Thymine, cytosine, adenine and guanine
- Cytosine, thymine, guanine and adenine
- Guanine, adenine, cytosine and thymine