JKCET Autosomal Inheritance — practice questions

Explore 2 free Autosomal Inheritance questions in JKCET Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Autosomal Inheritance questions and exercises with answers

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Sickle-cell anaemia is an example of which type of inheritance?Read the answer and worked solution →Spot the trait Mendel never usedRead the answer and worked solution →

Worked practice questions

Sickle-cell anaemia is an example of which type of inheritance?

Sex-linked dominant
Sex-linked recessive
Autosomal recessive (also a pleiotropic gene)
Y-linked

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Correct answer: C. Autosomal recessive (also a pleiotropic gene)

Sickle-cell anaemia is caused by a recessive autosomal allele (Hb^s). Homozygotes (Hb^s Hb^s) develop full disease and usually die early heterozygotes (Hb^A Hb^s) are carriers with mild anaemia only under low O₂. It also shows **pleiotropy** — one gene causes multiple effects (anaemia, organ damage, malaria resistance).

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Spot the trait Mendel never used

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Questions

Items
1. Seed shape
2. Leaf size
3. Pod colour
4. Flower position
Odd item
Leaf size
Items
1. Plant height
2. Seed colour
3. Root depth
4. Pod shape
Odd item
Root depth
Items
1. Flower colour
2. Pod colour
3. Seed shape
4. Stem thickness
Odd item
Stem thickness

Instructions

Three traits in each row are ones Mendel followed in his pea plants. Tap the fourth.

_Source: Qallery verified question bank, MHT CET, topic Inheritance and Variation_

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