Which of the following is true about dna mutations?

a. mutations can only occur in the body cells of an organism.
b. mutations can only be caused by environmental factors such as radiation.
c. mutations can spontaneously occur during dna replication.
d. mutations can only occur in the sex cells of an organism.

What is a sex-linked genetic disorder that disrupts the blood's ability to clot? a.achondroplasia b.huntington's disease c.hemophilia d.albinism

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables