Write one advantage and one disadvantage of cleistogamy to flowering plants.
Name one amino acid, which is coded by only one codon
Write the sex of a human having XXY chromosomes with 22 pairs of autosomes. Name the disorder this human suffers from.
How do monocytes act as a cellular barrier in humans to provide innate immunity?
Why do DNA fragments move towards the anode during gel electrophoresis?
(a) Why do organisms like algae and fungi shift from asexual mode of reproduction to sexual mode?
(b) What is a juvenile phase in organisms?
A hemophilic father can never pass the gene for haemophilia to his son. Explain.
Identify the areas labelled i, ii, iii and iv in the pie chart given below representing the biodiversity of plants showing their proportionate number of species of major taxa.
Why is the structure of an antibody molecule represented as H2L2? Name any two types of antibodies produced in the human body.
Differentiate between out-crossing and cross breeding.
Why are microbes like Spirulina being produced on a commercial scale? Mention its two advantages