PLEASE ANSWER ASAP WILL MARK BRAINLIEST The image shows rock strata from three different regions on earth. Identify all the layers that contain an index fossil

How does the study of genetic disorders such as pku biologists understand normal alleles?

An example of a trait that would be considered acquired and inherited is a. a cleft chin b. muscle tone c. scar tissue d. freckled skin

Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i