2. Consider the following pedigree chart (1) X-linked recessive (2) X-linked dominant (3) Sex limited recessive (4) Autosomal dominant The pedigree chart is most consistent with an X‑linked recessive mode of inheritance, […]
Blog
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Identifying Autosomal Recessive Inheritance
1. The following pedigree tree represents (1) Autosomal Dominant (2) Autosomal Recessive (3) X-linked Dominant (4) X-linked Recessive Introduction Pedigree analysis questions are common in CSIR NET and other life‑science […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Hfr Conjugation Unselected Markers
An E. coli strain has metB1 (90 min) and leuA5 (2 min) mutations. It also has strA7 (73 min) mutation and Tn5 transposon which confers streptomycin and kanamycin resistance, respectively, […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Bacterial Conjugation Gene Order Mapping
38. A conjugation experiment is carried out between F+ his+ leu+ thr+ pro+ bacteria and F– his– leu– thr– pro– bacteria for a period of 25 minutes. At this time […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Interrupted Mating Hfr Mapping Problem
Using interrupted mating, four Hfr strains were analysed for the sequence in which they transmitted a number of different genes to a F- strain. Each Hfr strain was found to […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Hfr Mapping in E. coli
In E. coli four Hfr strains donate the following genet, t markers in the order shown below: Strain 1: L Q W X Y Strain 2: M T A D […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
E. coli Hfr Strains Chromosome Mapping
In E. coli. four Hfr strains donate the genetic markers shown in the order shown: Strain 1: F L K O Z Strain 2: C Y A Z O Strain […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Understanding Gene Order in Bacterial Hfr Conjugation
In a conjugation experiment between bacterial Hfr strain ‘X’ and F-cell, lac gene enters the recipient in 4 minutes, but the F-cells remain auxotrophic for Leu, Trp, Ura, Glu,Phe and […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Hfr Gene Order Mapping
33. A cross is mode between an Hfr strain that is met+ thi+ pur+ and an F– that is met– thi– pur–. The recombinants are selected on medium that contains […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Hfr Conjugation Gene Mapping
32. A cross was made between Hfr met+ arg+ leu+ strs X F– met– arg– leu– strr in which leu+ exconjugants are selected. If the linear organization of the genes […]
