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Top Scorers Of MDCAT Biology Chapter 9 MCQ's Test MCQ`s Test

Sr.#	Question	Answer
1	What are chances for having Rh-ve baby if one parent is Rh+ve and (homozygous) and other is Rh-ve	A. 25% B. 50% C. 100% D. 0%
2	Genes for alpha and beta chains of hemoglobin are found on which chromosomes?	A. Chromosome 16 alpha; chromosome 11 beta B. Chromosome 11 alpha; chromosome 16 beta C. Chromosome 11 D. Chromosome 16
3	Queen victoria was having which kind of haemophilia	A. A B. B C. C D. None
4	Anti-Rh antibodies appear in plasma	A. During first few months B. During last months C. Only when stimulated D. If Rh⁺individual mistakenly receives Rh^-blood
5	The two linked genes A and B with a 30% recombination frequency must be	A. 15 units apart B. 30 units apart C. 60 units apart D. 90 units apart
6	When a single gene has multiple phenotypic effects, the phenomenon is called:	A. condominance B. epistasis C. pleiotropy D. sex-linkage
7	How may gene pairs contribute to the wheat grain colour?	A. one B. two C. three D. four
8	When a haemophilic carrier woman marries a normal man, who among her offspring may be affected	A. all her children B. all her daughter C. half of her daughter D. half of her sons
9	Two parents of blood group A had a child of blood group O, what will be percentage chances of having such child again	A. 25% B. 50% C. 75% D. None
10	A phenotype which can't be expressed in heterozygous state but can only be expressed other in homo or hemi form, would be	A. Dominant B. Bombay C. Recessive D. Ordinary