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Generation of non-parental gene combin...

Generation of non-parental gene combination is termed as

A

Linkage

B

Polyploidy

C

Recombination

D

Aneuploidy

Text Solution

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The correct Answer is:
C
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Explore conceptually related problems

Generation of non-parental gene combinations in F2 generation is due to

Read the following statements. (i) Morgan carried out several monohybrid crosses in Drosophila to study genes that were sex-linked. (ii) Morgan attributed that proportion of parental gene combination is less than the non-parental type due to the physical association. Term recombination was coined by Morgon to describe the generation of non-parental gene combinations. Alfred Strutevent used the frequency of linkage between gene pairs on the same chromosome and fine genetic map. Select how many are incorrect statement(s).

Morgan coined the term__ to describe the physical association of genes on a chromosome & the term____ to describe the generation of non-parental gene combinations.

Assertion: When two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combinations were much higher than the non-parental type. Reason: This is due to the physical association or linkage of the two genes.

Assertion: When the two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations is much higher than nonparental type. Reason: Higher parental gene combinations can be attributed to crossing over betweentwo genes.

If two genes in a dihybrid cross were located on the same chromosome, the proportion of parental gene combinations will be:

In a dihybrid cross, when would the proportion of parental gene combinations be much higher than non-parental types, as experimentally shown by Morgan and his group?

Assertion : When yelow bodied, white eyed Drosophila females were hybridised with brown-bodied, red eyeed males , and F_(1) progeny was intercrossed, F_(2) ratio deviated from 9:3:3:1 Reason : When two genes in a dihybrid are on same chromosome, the proportion of parental gene combinations are much higher than the non-parental type

How many non-parental gene combinations were obtained when Morgan crossed yellow bodies, white eyed female to brown bodied, red eyed male ?

AAKASH INSTITUTE-PRINCIPLES OF INHERITANCE AND VARIATION-Assignment (SECTION-A)
  1. Experimental verification of the chromosomal theory of inheritance wa...

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  2. Fruit flies are one of the best materials for genetic studies becaus...

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  3. Generation of non-parental gene combination is termed as

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  4. The initial clue about the genetic/chromosomal mechanism of sex determ...

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  5. In which of the sex determination both male and female same under ...

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  6. Two different types of gametes in terms of the sex chromosomes, ar...

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  7. Individuals having homomorphic sex-chromosomes produce

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  8. Which of the following phenomena leads to variation in DNA ?

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  9. Sickle cell-anaemia disorder arises due to

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  10. In pedigree analysis, symbol given for sex unspecified is

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  11. Cystic fibrosis, Myotonic dytrophy and Thalassemia are

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  12. Which of the following trait shows transmission from carries femal...

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  13. Phenylketonuria is an inborn error of metabolism that is inherited as

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  14. Which of the following abnormalities is due to autosomal dominant mu...

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  15. Absence or excess or abnormal arrangement of one or more chromosomes ...

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  16. Mark the odd one w.r.t syndrome which occurs due to failure of segreg...

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  17. Heterozygous round and yellow seeded pea plants were selfed and tota...

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  18. Which of the disorder is related with the Karyotype given below ?

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  19. Mark the correct match

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  20. Physical , psychromotor and mental development is retarded in an indi...

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