Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Write the name of the ancestors of great apes and humans?

Fill in the blanks:
The fusion of male and female gametes is called _____________

If the population density at time t is N then what will be its density at time t + 1?

Who developed the principle/ method of automated DNA sequences?
OR
Name the scientist who developed the method to determine the sequence of amino acids in proteins.

Female reproductive organs and associated functions are given below in column A and B. Fill in the blank boxes.

Column A	Column B
Ovaries	Ovulation
Oviduct	A
B	Pregnancy
Vagina	Birth

What is the ecological principle for applying biological control methods for managing insect pests?

Give an example of an organism that enters ‘diapause’ and why.

Write the name of contraceptive pills taken once in a week.

Name the gas released and the process responsible for puffing up of the bread dough when Saccharomyces cerevisiae is added to it.

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?