MCQ
Recessive characters are expressed
- ✓Only when they are present on $X$ chromosomes of male
- BOnly when they are present on $X$ chromosomes of female
- COn any autosome
- DOn both the chromosomes of female
✓
Answer
Correct option: A.
Only when they are present on $X$ chromosomes of male
a
(a)Recessive characters are expressed in the subsequent generation only when present on the $X$ chromosome of male.
(a)Recessive characters are expressed in the subsequent generation only when present on the $X$ chromosome of male.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
Which of the following ions are required for nerve conduction ?
Fungi belonging to genera Microsporum, Trichophyton and Epidermophyton are responsible for
Assertion: Histamine is related with allergic and inflammatory reactions.
Reason: Histamine is a vasodilator.
Study the following flow chart of biogas production and select the correct option for $A, B$ and $C$
→Corticoids are the hormones, which are secreted by
If you go back in the history approx. $4500$ million years back when atmosphere was reducing the organism were
→In given table disorders of the muscular and skeletal system are given, match the items of Column I with those of Column II:
| Column I | Column I |
| (A) Muscular dystrophy | (i) Rapid spasms in muscle due to low Ca++ in body fluid |
| (B) Arthritis | (ii) Age-related disorder, decreased bone mass, estrogen is a common cause. |
| (C) Myasthenia gravis | (iii) Inflammation of joints due to the accumulation of uric acid crystals. |
| (D) Tetany | (iv) Progressive degeneration of skeletal muscle mostly due to genetic disorder |
| (E) Osteoporosis | (v) Autoimmune disorder affecting neuromuscular junction, paralysis of skeletal muscle |
| (F) Gout | (vi) Inflammation of joints. |
Progestasert and $LNG-20$ are
→Given below are two statements :
→Statement $I:$Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.
Statement $II:$Rheumatoid arthritis is a condition where body does not attack self cells.
In the light of the above statements, choose the most appropriate answer from the options given below: