Inheritance and Variation — BIOLOGY STD 12 Science — Question

How would you find genotype of a tall pea plant bearing white flowers? Explain with the help of a cross. Name the type of cross you would use.

Why is a recombinant protein so called? How can it be harvested on a large scale? Write two precautions to maintain a higher yield.

Given below are the events that are observed in an artificial hybridisation programme. Selection of parents → Emasculation → Bagging → Collection of pollen from other male plant → Dusting of pollen on stigma — Rebagging.
While, planning for crop improvement involving dioecious plants, which of the above mentioned steps would not be relevant?

1. What is inbreeding depression?
2. Explain the importance of "selection" during inbreeding in cattle.

Give scientific reasons: Pollination is prerequisite for fertilization in plants.

Water acts as a thermal buffer. Justify the statement.

The diagram represents a surgical sterilization method in males. Study the same and answer the questions that follow

1. Give the name of the surgical method represented in the diagram.
2. Which part is ligated or cut.
3. Name the corresponding surgical method conducted in females.
4. Name the part which is ligated in females and why?

Mendel selected garden pea for his breeding experiments.

In the given diagram, write the names of parts shown with lines.