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[A]: Erythroblastosis foetalis is a dise...

[A]: Erythroblastosis foetalis is a disease reilated with Rh factor and may cause death of foetus in the mother.
[R]: It causes massive destruction of foetal R8Cs that leads to anaemia and tissue dam- age of foetus.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
A
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In the following items, each passage consists of six sentences. The first and the sixth sentence are given in the beginning as S1 and 56. The middle four sentences in each have been removed and jumbled up. These are labelled P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet. S1: Don't you think that the housefly is a nuisance ? S6: When you see a fly rubbing its legs together, it is just cleaning itself, and scraping off some of the material that has gathered there. P: For ages that's what man considered the fly to be — just a nuisance. Q : It was discovered that these flies carried disease germs that cause the death of millions of people every year. R: But now we know that the innocent-looking housefly is one of man's worst enemies. S: It makes an irritating buzzing sound, it annoys you when it crawls on your skin, and so on. The proper sequence should be

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
  1. [A]: The two members of a gene pair segre- gate from each other into t...

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  2. [A]: Domestication is a type of plant breeding. [R]: Selection is t...

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  3. [A]: Erythroblastosis foetalis is a disease reilated with Rh factor an...

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  4. [A]: Genetic disorder, sickle cell anaemia is common in new born babie...

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  5. [A]: PKU is a autosomal recessive hereditary metabolic disease caused ...

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  6. [A]: Each gemete has only one allele for each trait. [R]: It is tru...

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  7. [A]: When doing genetics problems, firs de- cide the appropriate key a...

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  8. [A]: Chromosomes are divided into hetero- chromatin and euchromatin pa...

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  9. [A]: Metacentric chromosomes are V-shaped [R]: In these chromosomes...

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  10. Assertion : Plasmids are double-stranded extra chromosomal DNA. Reas...

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  11. [A]: Exchange of genetic material occurs dur- ing meiosis. [R]: The...

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  12. Assertion:XXX females are called super females Reason : They often g...

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  13. [A]: A gene affecting the expression of an- other nonallelic gene is c...

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  14. [A]: The sex linked genes are passed on to the grandson through the da...

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  15. Assertion : Muatations are necessary for the survial to the species. ...

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  16. [A]: It is not possible to take photograph and count chromosomes when ...

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  17. [A]: Neurospora is an ideal genetic material for research. [R]: Bec...

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  18. [A]: Heterosis is superiority of F1 hybrid over its two genetically d...

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  19. [A]: Mendelian recombinations are due to crossing over. [R]: Crossi...

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  20. [A]: Genes confined to differential region of homologous chromosomes a...

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