Answer:
1. C -make food into energy
2. C - cellulose
3. B - organelles
Fetus can survive an extra copy of a chromosome, but being hemizygous is <span>usually fatal</span>
'Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.
Hope this helps.
C. a Y chromosome from his father
This is because boys have one X and one Y chromosome, while girls have 2 X's, so the Y must come from the father.
Hope this helps :D
