Biology · PRINCIPLES OF INHERITANCE AND VARIATION

In pea seeds, starch synthesis is controlled by a single gene with alleles \( B \) and \( b \). Considering starch grain size as the phenotype, the alleles show (i)_, whereas considering seed shape (round vs. wrinkled) as the phenotype, allele \( B \) shows (ii)_.

A
Incomplete dominance, Complete dominance
B
Co-dominance, Incomplete dominance
C
Incomplete dominance, Complete dominance
D
Incomplete dominance, Co-dominance

View Answer & Solution

Correct answer · Option C

Incomplete dominance, Complete dominance

Explanation

स्टार्च के कणों के आकार के संदर्भ में, \( Bb \) पौधे मध्यम आकार के स्टार्च कण उत्पन्न करते हैं, जो अपूर्ण प्रभाविता (Incomplete dominance) को दर्शाता है। हालाँकि, बीज के आकार (गोल या झुर्रीदार) के संदर्भ में, \( B \) एलील \( b \) पर प्रभावी होता है क्योंकि \( Bb \) बीज गोल होते हैं, जो पूर्ण प्रभाविता (Complete dominance) को दर्शाता है। अतः सही विकल्प 3 है (नोट: मूल विकल्पों में क्रम के अनुसार विकल्प 3 सही है जहाँ (i) अपूर्ण प्रभाविता और (ii) पूर्ण प्रभाविता दिया गया है)।

In pea seeds, starch synthesis is controlled by a single gene with alleles \( B \) and \( b \). Considering starch grain size as the phenotype, the alleles show (i)_, whereas considering seed shape (round vs. wrinkled) as the phenotype, allele \( B \) shows (ii)_.

Correct answer · Option C

Explanation

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In pea seeds, starch synthesis is controlled by a single gene with alleles \( B \) and \( b \). Considering starch grain size as the phenotype, the alleles show (i)_________, whereas considering seed shape (round vs. wrinkled) as the phenotype, allele \( B \) shows (ii)_________.

Correct answer · Option C

Explanation

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In pea seeds, starch synthesis is controlled by a single gene with alleles \( B \) and \( b \). Considering starch grain size as the phenotype, the alleles show (i)_, whereas considering seed shape (round vs. wrinkled) as the phenotype, allele \( B \) shows (ii)_.