Q.No.1 Evolution on earth had occurred in such a way that there are 96 amino acid instead of 20. DNA has 12 different types of bases and protein synthesis occurs in the same way as today. The minimum number of bases per codon will be-
a) 12
b) 8
c) 2
d) 3
Q.No.2 When cross is made between pea plant with green seed and plant with yellow seeds, what proposition of phenotype in offspring could be expected with green and yellow-
a) All green
b) 50% green and 50% yellow
c) All yellow
d) None.
Q.No.3 In a certain species of plants, the trait for tall is dominant (T) and for short recessive (t), similarly, for yellow seeds dominant (Y) and green recessive (y). A cross between two plants resulting 292 tall and yellowwith 103 short and green plants which of this is most likely to be the parents genotype.
a) TtYY×Ttyy
b) TtYy×TtYy
c) TTyy×TTYy
d) TTYy× TTYy
Q.No.4 Considering the four nucleotides A,T, C and G then number of base substitutions that can occur in amino acid codons are:
a) 535
b) 549
c) 265
d) 268
Q.No.5 If mother has ‘O’ blood group, chind also has ‘O’ group. What will be the blood group of father?
a) O
b) A
c) B
d) A,B,O
Solution with explanation will be available soon in medicoRAS YouTube Channel.