Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

What causes the annual variation in the intensity and duration of temperature?

In a dihybrid cross carried out by T.H. Morgan in Drosophila, the F, ratio deviated from that of Mendel's dihybrid F, ratio. Give a reason.
Or
Why do certain genes tend to be inherited together in a cell at the time of cell division?

Or
If the frequency of a parental form is higher than 25% in a dihybrid test cross, what does that indicate about the two genes involved?

Name the interspecific interaction in which one is detrimental while the other is neutral.

If epididymis of man is removed, which function will be affected? Clarify it

What is the stalk of ovule called?

Fill in the blanks 'a' and 'b':

1. Rhizome: Ginger :: 'a': Water hyacinth.
2. Leaf buds : Bryophyllum :: Bulbils : 'b'.

Why are sports persons tested strictly before an event?

How does Jhum cultivation promote desertification?

How much carbon is fixed in the biosphere through photosynthesis annually?

Expand the full term of IUCN.