AFMC Biology Paper set for practice

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AFMC Biology Paper set 3
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1

If genes A and B show supplementary gene effect for mice coat colour, such that aa is rescessively epistatic to B, what would be the ratio of agouti, black & albino in the cross aaBB × AaBb


2

A person meet with an accident and great loss of blood has occured. There is not time to analyse his blood groups. It is safe to transfuse blood of


3

A tobacco plant heterozygous for albinism (a recessive character) is self pollinated and 1200 seeds are subsequently germinated. How many seedlings would have the parental genotype


4

When chicken on F1 generation are mated among themselves, they produce an F2 generation of four kind of birds, as far as comb type and plumage colour are concerned in the following proportion 9 rose comb blacks, 1 single comb white, 3 rose comb whites, 3 single comb blacks. Based on this find out which two are the recessive characters in these birds


5

In Spallanzani’s experiment, one set of flasks had access to air through holes in the corks and the other set did not. In the set which had access to air, the contents showed abundant growth of microorganisms. What inference can be drawn from this experiment?


6

In its most widely accepted sense, organic evolution mean, i.e., the “Doctrine of evolution” is particularly concerned with


7

The Theory of Recapitulation means that


8

Which one is a pair of homologous organs


9

According to the theory of evolution, all of the different kinds of homologies-namely, anatomical,molecular, and embryological should


10

Wheat plant is 6n = 42. What will be the number of chromosomes in it’s Monosomic, haploid and Trisomics?


11

X-rays cause mutation by


12

The chromosomes bearing loops for rapid transcription and informosomes production are


13

Mutations