Home
Class 10
BIOLOGY
One experimenter cut the talls of paren...

One experimenter cut the talls of parent rats, what could be the traits in offsprings?

Text Solution

Verified by Experts

1. If the tails of parent rats were ct their offsprings will have normal tails.
2. This is because the bodily changes which may occur due to environment won't be passed to its offspring
3. cutting of tail will not c hage the DNA of the germ cells, it is a bodily change. Therefore loss of tail is not a trait that can be inherited by progeny of tailless rats.
4. Augustus weismann did this experiment on rats to test the theory of Inheritance of acquired characters proposed by lamarck
5. He re3moved tails of parental rats.
5. He removed tails of parental rats. 6. he observed its offsprings which have normal tails. 7. he has done it again for twenty two generations but offsprings are with normal tails .
7. he has done to again for twenty two generations but offsprings are with normal talls.
8.Thus he proved that the bodily changes which may occure due to environment won't be passed to its offspring.
Promotional Banner

Topper's Solved these Questions

  • HAREDITY -FROM PARENT TO PROGENY

    VGS PUBLICATION-BRILLIANT|Exercise II (ASKING QUESTIONS AND MAKING HYPOTHESIS )|2 Videos
  • HAREDITY -FROM PARENT TO PROGENY

    VGS PUBLICATION-BRILLIANT|Exercise IV (INFORMATION SKILLS AND PROJECTS)|3 Videos
  • HAREDITY -FROM PARENT TO PROGENY

    VGS PUBLICATION-BRILLIANT|Exercise (CREATIVE QUESTIIONS FOR NEW MODEL PAPER)( 4 mark questions)|20 Videos
  • GLOBAL WARMING

    VGS PUBLICATION-BRILLIANT|Exercise FILL IN THE BLANKS|15 Videos
  • HEREDITY AND EVOLUTION

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|308 Videos

Similar Questions

Explore conceptually related problems

One experimenter cut the tails of parent rats , what could be the the traits in offsprings? Do the daughter rats contain tails or not? Explain your argument.

Two genes A and B are linked in a dihybrid cross involving these two genes, the F_(1) heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?

One student (researcher) wants to cross pure tall plant (TT) with pure dwarf (tt) plant, what would be the F1 and F2 generations? Explain.

The time period of a body suspended from a spring is T. What will be the new time period, if the spring is cut into the two equal parts and (i) the mass is suspended from one part? (ii) the mass is suspended simultaneously from both the parts?

Covalent molecules formed by heteroatoms bound to have some ionic character. The ionic character is due to shifting of the electron pair towards A or B in the molecule AB. Hence, atoms acquire small and equal charge but opposite in sign. Such a bond which has some ionic character is described as polar covalent bond. Polar covalent molecules can exhibit dipole moment. Dipole moment is equal to the product of charge separation, q and the bond length, d for the bond. The unit of dipole moment is Debye. One Debye is equal to 10^(-18) esu cm. Dipole moment is a vector quantity. It has both magnitude and direction. Hence, dipole moment of molecules depends upon the relative orientation of the bond dipoles, but not on the polarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moments help to predict the geometry of the molecules. Dipole moment values can be used to distinguish between cis-and traps-isomers, ortho-, meta-and para-forms of a substance, etc. The percentage of ionic character of a bond can be calculated by the application of the following formula : % " ionic character " = ("Experimental value of dipole moment ")/("Theoretical value of dipole moment ") xx 100 A diatomic molecule has a dipole moment of 1.2 D. If the bond length is 1.0 xx 10^(-8) cm, what fraction of charge does exist on each atom?