What is the minimum number of different aminoacyltRNA synthe

What is the minimum number of different aminoacyl-tRNA synthetases required by a ce a. 64, one for each codon b, 61, one for each sense codon c. 30, one for each different tRNA d. 50, one for each different tRNA e. 20, one for each amino acid The genetic code is said to be \"degenerate\" because: a. there are more codons than amino acids. b. there are more amino acids than codons. c. different organisms use different codons to encode the same amino acid. d. some codons specify more than one amino acid. e.there are more tRNAs than amino acids. Two chromosomes have the following segments, where represents the centromere: K L M middot N O P Q R S T U V middot W X Y Z What type of chromosome mutation would result in the following chromosomes: KLM middot N O R Q P. S T U V middot W X Y Z a. Deletion b. Pericentric inversion c. Paracentric inversion d. Nonreciprocal translocation e. Reciprocal translocation

Solution

Ans 31: It should be (c) Paracentric inversions

Reason:

Paracentric inversions do not include the centromere and both breaks occur in one arm of the chromosome. Pericentric inversions include the centromere and there is a break point in each arm.

and in qus 31 breakage occur in one arm of the chromosome only.