A novel protein from a deep sea archaebacterium was identified and sequenced. The sequence is expected to be widely divergent from known sequences. Which scoring matrix will produce the most appropriate alignment in a search for homologs in the NCBI database?

#Question id: 4757

#Section 3: Genetics, Cellular and Molecular Biology

The newborn baby of a mother having blood group O, Rh+ and father having blood group AB, Rh-, got mixed with other babies in the hospital. The baby with which of the following blood groups is not confirmable to be of the said couple?

(i) AB, Rh+                                                    (ii) O, Rh+

(iii) A, Rh+                                         (iv)  B, Rh+

#Question id: 4758

#Section 3: Genetics, Cellular and Molecular Biology

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?

#Question id: 4799

#Section 3: Genetics, Cellular and Molecular Biology

You set up a mapping cross involving your favorite gene (YFG) in Neurospora and determine the following octad types: 4:4 arrangement 83; 2:4:2 arrangement 7; 2:2:2:2 arrangement 10. What is the distance between your gene and the centromere?

#Question id: 4800

#Section 3: Genetics, Cellular and Molecular Biology

You set up a mapping cross involving two genes of interest in Saccharomyces and determine the following tetrad types: 8 nonparentalditype; 12 tetratype; 80 parental ditype. Calculate the most accurate map distance between these two genes.

#Question id: 4801

#Section 3: Genetics, Cellular and Molecular Biology

You set up a mapping cross involving two genes in Aspergillus and determine the following percentages of tetrad types: parental ditype 51%, nonparentalditype 49%. What can you say about your genes?

#Question id: 4802

#Section 3: Genetics, Cellular and Molecular Biology

Why is tetrad analysis useful for studying genetics?