Across
1
Unit of heredity
3
Group of similar cells
4
The Red Planet
6
Path of a planet around the sun
Down
2
Positive particle in nucleus
5
Infectious microscopic agent
6
Compound containing oxygen
7
Unit of power
Unit of heredity
Group of similar cells
The Red Planet
Path of a planet around the sun
Positive particle in nucleus
Infectious microscopic agent
Compound containing oxygen
Unit of power