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#Question id: 4976

Which of these is the most likely explanation for the existence of dicynodont fossils on modern-day Antarctica?

#SCPH28 | Zoology

  1. They arrived there aboard ʺraftsʺ of vegetation, and quickly adapted to the bitterly cold climate.

  2. Earthʹs polar regions were once so warm (especially immediately after the ʺsnowball Earth periodʺ) that reptiles and mammal-like reptiles flourished there.

  3. The landmass that is now the Antarctic continent was formerly located at a more-northerly position, and was also united to other landmasses.

  4. Dicynodonts originated on the island continent of Antarctica and went extinct as the continent migrated to its current position at the South Pole.

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TLS Online TPP Program

#Question id: 4824

#SCPH12 I Genetics

If plant with genotype AaBb is test cross where A and B are link at 10 map unit  in trance configuration then the probability of getting AaBB and AaBb genotype respectively?
TLS Online TPP Program

#Question id: 4824

#SCPH28 | Zoology

If plant with genotype AaBb is test cross where A and B are link at 10 map unit  in trance configuration then the probability of getting AaBB and AaBb genotype respectively?
TLS Online TPP Program

#Question id: 4825

#SCPH12 I Genetics

How many genetically different gametes can be made by an individual of genotype AaBbCcDd if gene A, B are completely link and other are unlink?
TLS Online TPP Program

#Question id: 4825

#SCPH28 | Zoology

How many genetically different gametes can be made by an individual of genotype AaBbCcDd if gene A, B are completely link and other are unlink?
TLS Online TPP Program

#Question id: 4826

#SCPH12 I Genetics

In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?
TLS Online TPP Program

#Question id: 4826

#SCPH28 | Zoology

In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?