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TLS Online TPP Program

#Question id: 7159

'Intercalary growth' in a regenerating amphibian limb means that if a distal blastema is grafted to a proximal stump:

#Unit 5. Developmental Biology
  1. the distal blastema grows back, to regenerate proximal elements, then out, to regenerate distal structures.
  2. the stump grows out to regenerate proximal structures, until the positional values of the blastema are produced, at which time the distal blastema takes over and completes outgrowth of distal structures.
  3. the distal blastema grows out, regenerating distal structures, resulting in a limb lacking intermediate structures.
  4. the distal blastema grows proximally, intercalating intermediate structures between it and the stump, then growth stops, resulting in a regenerate lacking distal structures.
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TLS Online TPP Program

#Question id: 4754

#Unit 8. Inheritance Biology

Allele A is epistatic to allele B. Which of the following statement are incorrect?
TLS Online TPP Program

#Question id: 4755

#Unit 8. Inheritance Biology

When two albino snails were crossed, all of the F1 were pigmented. All F1 intercross would results
TLS Online TPP Program

#Question id: 4756

#Unit 8. Inheritance Biology

In summer squash, white colour fruit (W) is dominant over yellow colour (w) and disc-shaped phenotype (D) is dominant over sphere-shaped phenotype (d). Determine the genotype of the parents gives 3/8 white, sphere, 3/8 white, Disk, 1/8 Yellow, Disk and 1/8 Yellow, Sphere?
TLS Online TPP Program

#Question id: 4757

#Unit 8. Inheritance 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+
TLS Online TPP Program

#Question id: 4758

#Unit 8. Inheritance 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?
TLS Online TPP Program

#Question id: 4759

#Unit 8. Inheritance Biology

which of the following is not a mechanism for sex determination?