Fill in the following blanks with suitable words:
All races of man have ....................... blood groups.

Fill in the following blanks with suitable words : Our heart has ….................. chambers .

Fill in the blanks with suitable words A pair of ………

Fill in the following blanks with suitable words : Acid + Base rarr …….+Water

Fill in the following blanks with suitable words : Haemoglobin is present in …................. blood cells.

Fill in the following blanks with suitable words : Friction produces……………………

Fill in the following blanks with suitable words: Yeast is a ………… celled organism.

Fill in the following blanks with suitable words : Souring of milk is a _____change.

Fill in the following blanks with suitable words : (a) Genes always work in ................ . (b) In pea plants, the gene for dwarfness is ............... Whereas that for tallness is .............. . (c) Most people have ............ earlobes but some have ............... earlobes . (d) A human gamete contains ........... chromosomes whereas a normal body cell has ............... chromosomes in it. (d) All races of man have ........... blood groups . (f) The .............. chromosomes for a ............. are XX whereas that for a ............. are XY .