1. why are echinoderms called spiny-skinned animals?
2. what features do all echinoderms have in common?
3. how do echinoderms move and get their food?

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

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d