100LEVEL 1ST Semester ONLINE-EXAM Preparatory Questions
BIO 101-
1. The name of a garden pea plant Gregor Mendel used for his experiment is (a)Pisum sativum(b)Pisum satevum(c)Pisum Sativum(d)none
2. Genetics consist of……………….and……………. (a)inheritance and variation(b)inheritance and heredity(c)variation and heredity(d)none
3. An offspring has a blood group B, the mother has a blood group O, what is the fathers blood group (a)A(b)B(c)O(d) non of the above
4. In a cross between grey seed and white seed, result obtain are 72 grey and 24 white, what is the genotype of the cross parent (a)GG x Gg(b)GG x gg(c)Gg x Gg(d)Gg x gg
5. In the crossing of a parent 72 and 24, grey and white respectively yielded 500 offspring. What is the correct number (a)256 grey and 244 white(b)375 grey and 125 white(c)450 grey and 50 white
6. A testcross is a cross between individual of unknown genotype and ____ A. dominant parent B. recessive parent C. either of the two parents D. no answer
7. When an individual heterozygous for a pair of contrasting characters is used to cross itself, the expected F2 phenotypic ratio is ____A. 1 dominant: 3 recessives B. 1 recessive : 3 dominants C. 1 dominant : 1 recessive D. all dominant
8. Which of these is not true about continuous variation? A. it can be measure B. It is affected by many genes C. it is cumulative D. it is not influenced by the environment.
9. The total number of chromosomes in the gametic cell of Drosophila is 4. How many chromosomes are in its somatic cell? A.16 B. 4 C.8 D.2
10. Which of the following blood groups can give blood to a patient in blood group ‘B’ that is in need of blood? A. A and 0 B. B and 0 C. A and B D. digestion
