BIS 2C Lecture 26: Porifera, Placozoa

1. After reading a karyotype from a patient, you find that he is missing the terminal portion of his 3 rd chromosome’s long arm.

a. What is this individual’s karyotype?

b. If you knew that this individual was missing from band 11 to the end of the chromosome, how would this be written?

5. Skin stem cells: What are the p roliferating regions (in both epidermis and follicle) and location of authentic skin stem cells; how were skin stem cells id entified ? What are the d ifferences between second and third degre e burns , and how does the physician treat 3 rd degree burns (what are the key steps)?

Please answer carefully

choose which one is correct

Which of these species was the first to craft stone tools?

A) H. heidelbergensis

B) H. erectus

C) H. ergaster

D) H. habilis

E) H. sapiens

I know that the answer will be Australopithecus garhi but it is not here