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Assertion (A): Dominance is not an autonomous feature of gene
Reason (R): Two traits show up equally in the heterozygote's phenotype in codominance

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Important Questions on Principles of Inheritance and Variation

MEDIUM
AP EAPCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET Medical 2021 (6-Sep Afternoon)>Q 14

Study the following statements and identify the correct combinations. The comect statements are
(i) Multiple alleles can occupy different loci on the same chromosome
(ii) Two alleles of gene can form three genotypes in a diploid organism
(iii) When more than two alleles exist in a population of a specific organism is called multiple allelisin
(iv) The number of phenotypes that can occur for multiple alleles is given by the expression n(n+1)2
(v) A well-known example of multiple allelism is ' ABO° blood groups

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET - 3 Sep 2021 Afternoon>Q 15
Single gene can produce more than one effect, like starch synthesis in pea plant. It has two alleles (B and b) for starch synthesis the phenotypes of which are also given below BB, bb, Bb, which are correct?
(i) BB - round seed, large starch grain.
(ii) bb - wrinkled seed, less starch grain.
(iii) Bb - intermediate size seed, intermediate starch synthesis.
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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET - 3 Sep 2021 Afternoon>Q 16
When homozygous 'A' blood group Man marries homozygous 'B' group Woman in 'F1' generation and 'AB' group of springs are born. When these 'F1' individuals marry each other. in 'F2' generation individuals with how many blood groups are born?
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IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET Medical 2021 (6-Sep Forenoon)>Q 17
Who proposed the chromosomal theory of inheritance?
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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET Medical 2021 (6-Sep Forenoon)>Q 18
In a certain taxon of insects (Example: Cockroach), some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosomes bearing organisms are _________
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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET - 3 Sep 2021 Afternoon>Q 19
Select the incorrect statement?
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AP EAPCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET 2020 (24-Sep Shift-1)>Q 20
With increasing age, the linkage ___.
MEDIUM
AP EAPCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 20 - Principles of Inheritance and Variation>AP EAPCET - 3 Sep 2021 Forenoon>Q 21

Assertion (A): The proportion of parental gene combinations was much lighter than non-parental type

Reason (R): Gene combination is due to linkage of the two genes