Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
ZoologyPrinciples of Inheritance and VariationGenetic DisordersEasy2 minPYQ_2020
ZoologyEasysingle choice
Match Column-I with Column - II and select the CORRECT option from the codes given below.
| Column – I | Column – II |
| (P) Autopolyploidy | (i) 2n+1 |
| (Q) Trisomy | (ii) AAAA |
| (R) Allopolyploidy | (iii) AABB |
| (S) Nullisomy | (iv) 2n-2 |
Options:
Answer:
A
Solution:
When an individual has more than two sets of chromosomes and both of which come from the same parental species is called autopolyploidy. It will be represented by AAAA.
Trisomy is a type of aneuploidy in which abnormal sets of chromosomes are present. The somatic cell contains three copies of one chromosome in trisomy and its genomic formula is 2n+1.
When an individual has more than two sets of chromosomes and both of which come from the different parental species is called allopolyploidy. It will be represented by AABB.
Nullisomy is also a type of aneuploidy in which diploid organisms lose a pair of homologous chromosomes and its genomic formula is 2n-2.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Genetic Disorders
⏱ 2mℹ️ Source: PYQ_2020
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