1. heterozygous
2. fact because the color is passed down from the parents
3. This can happen because the trait is recessive and not dominate
4. A
5.A (i think)
6. traits are passed on through genes
I'm not sure but I thinks the first animal that produce bacteria is Pig.
The genotype would be X'Y for the father (he would be colorblind)
The genotype would be X'X for the mother (she would be a carrier)
The offspring would be X'X' _ X'X_ X'Y_ XY
The ratio would be 1:1 normal to colorblind
Hope this was helpful(;
The answer is C build muscle hair and nails
