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What is earlobe ? Which are dominant and...

What is earlobe ? Which are dominant and recessive variants respectively ?

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The lowest part of the ear pinna is called earlobe. Amongst two variants, free earlobe is dominant and attached earlobe is recessive.
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To suggest rule for inheritance of earlobe type. Procedure /Method : rarr The lowest part of the ear pinna called the earlobe, is closely attached to the side of the head, i.e., attached or not, i.e., free. rarr Observe the earlobes of all the students in the class. Prepare a list of students. Enter the data about the earlobes whether they are free or attached. rarr Find out about the earlobes of the parents of each student in the class. rarr Correlate earlobe type of each student with that of their parents. rarr In the column write F for free earlobe and A for attached earlobe. Answer the following questions on the basis of the collected data: From your collected data state which expression is dominant and which one is recessive for earlobe.

Distinguish between : Dominant trait and Recessive trait

Everyone should have knowledge about his/her blood group as well as the blood group of family members. There are four blood group A, B, AB and O. You consult your family doctor and get more knowledge about blood group. Whether the genes of blood groups have their dominant and recessive expression?

KUMAR PRAKASHAN-HEREDITY AND EVOLUTION-OBJECTIVE QUESTIONS AND ANSWERS
  1. Do all variations in a species have equal chances of surviving in the ...

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  2. Who forms the basis for evolutionary processes ?

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  3. What is earlobe ? Which are dominant and recessive variants respective...

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  4. According to Mendel's experiment, the tall plants in F(1) generation w...

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  5. How do germ cells make a single set of genes from the normal two copie...

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  6. Can asexually reproducing organisms follow similar rules of inheritanc...

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  7. Do tailless mice have tailless progeny ? Why or why not ?

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  8. Explain the word: Micro-evolution

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  9. What is called when two populations of a species cannot reproduce with...

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  10. What is the meaning of characteristics ?

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  11. What allows us to make classification groups ?

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  12. When is it said that two species have a common ancestor ?

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  13. Which fossil was found in the Narmada Valley a few years ago ?

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  14. Which method is now extensively used for tracing evolutionary relation...

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  15. Which tools have been used for studying human evolution ?

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  16. From where the genetic footprints of Homo sapiens can be traced ?

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  17. Define: OR Explain the terms: Heredity

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  18. Define: OR Explain the terms: Trait

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  19. Define: OR Explain the terms: Gene

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  20. Define: OR Explain the terms: Sex determination

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