Consider three genes: X, Y, and Z. The recombination frequency between X-Y, X-Z, and Y-Z gene pairs was found to be 50%, 25%, and 50%, respectively. What would be the right inference?

1.	genes X and Y are on the same chromosome
2.	genes X and Z are on different chromosomes
3.	genes Y and Z are on different chromosomes
4.	All three genes are located on the same chromosome

The source of any of the genes located on either of the X chromosomes in a female cannot be:

The chromosomal analysis of a human being, phenotypically female, does not show Barr body. This is most likely:
1. Normal condition
2. Turner’s syndrome
3. Meta female
4. Klinefelter’s syndrome

Which gene pair in Pisumsativum ought to have shown linkage?
1. Violet versus white flower color and green versus yellow pod color
2. Green versus yellow pod color and tall versus dwarf plant height
3. Full versus constricted pods and Green versus yellow pod color
4. Full versus constricted pods and tall versus dwarf plant height

All the following are mechanisms of sex determination in living organisms except:
1. The Z-W system
2. The X-O system
3. The haplo-diploid system
4. The parthenogenetic system

A recessive pattern of inheritance can be easily identified in a pedigree analysis if it shows that:

Pedigree analysis rather than conventional methods are used to study genetic traits because:

A true breeding (pure line) plant can be differentiated from a hybrid as:
1. They only have one type of allele of the gene that controls the trait of interest.
2. They carry two different alleles for the gene that controls the trait of interest.
3. They can only reproduce by self fertilization.
4. They all have dominant alleles for the trait of interest.

 

Match the disorder in Column I with the location of the gene causing it in Column II and select the correct option from the codes given:

Codes:

The pedigree shows the inheritance of red-green color blindness in a family. If II 3 marries a color-blind man, what is the probability that her first child will be normal?