6. Which of the following is NOT a gene mutation?
a inversion
c. deletion
b. insertion
d. substitution

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Several billion years ago which gas was the least prevailant in the atmosphere