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The 23rd pair called sex chromosomes differ in males and females. Females have two copies of the X chromosome (XX), while males have one X and one Y chromosome (XY). Thus all non-gametic cells have 2 sex chromosomes in them.
Which of the following is correctly matched ?
Mendel chose ………….. pairs of contrasting characters for his study. In a monohybrid cross he obtained a definite phenotypic ratio of ……….. ...
An element has 8 electrons in its valence shell. Which of the following statements is correct?
What event is unique to angiosperms and involves the fusion of two different male gametes?
Which river in the world holds the highest volume of water?
What is the function of a camshaft in an internal combustion engine?
What will be the gross irrigation requirement of a field having net irrigation requirement 400 mm and field irrigation efficiency 80%?
Leaf tip is modified as tendrils in
What is the purpose of the Clean Plant Programme (CPP) approved in August 2024?
A practice of removing a portion of a plant to enhance its shape, influence its development, flowering and fruitfulness and improve the quality of the f...
