Genetics, Molecular Biology and Evolution-Linkage and Crossing Over (IFS Botany): Questions 1 - 2 of 2

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Question number: 1

» Genetics, Molecular Biology and Evolution » Linkage and Crossing Over

Appeared in Year: 2015

Essay Question▾

Describe in Detail

What are the merits of pedigree methods? (Paper 2, Section A)

Explanation

What is Pedigree Method?

  • Individual plants are selected from F2 and the subsequent generation and their progenies are tested.

  • Pedigree record is the record of the entire parent’s offspring relationship in this process

  • Selection of individual plant is continued till the progenies show no segregation.

  • Selection is done among the… (129 more words) …

Question number: 2

» Genetics, Molecular Biology and Evolution » Linkage and Crossing Over

Appeared in Year: 2015

Essay Question▾

Describe in Detail

How will you distinguish cytologically between paracentric inversion and pericentric inversion? (Paper 2, Section A)

Explanation

Paracentric:

  • Paracentric inversions do not occur in the centromere.

  • Crossing over only occurs in the out the loop in one arm of the chromosome.

  • The result is a large loop in where recombination occurs in only part of the loop.

  • When crossover occurs within the loop, it causes the cells… (333 more words) …

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