Evolutionary changes in internal brain structure

Question 1

what is concerted brain evolution hypothesis

Answer 1

the brain evolves as a single unit and the evolution of different brain regions are coordinated.

Question 2

what is symmetric cell division

Answer 2

In the symmetric division model, a stem cell produces two differentiated cells or two stem cells

Question 3

what is asymmetric cell division

Answer 3

asymmetric division model, a stem cell produces one differentiated cell and one stem cell

Question 4

which cell division would have to be tweaked to create more neurons

Answer 4

symmetric division

Question 5

relationship between brain structure and neurogenesis (concerted evolution)

Answer 5

As brain size increases, disproportionally larger regions develop later

Changes in region brain size involves changes in the timings of neurogenesis (prolonged)

Question 6

what is Mosaic evolution hypothesis

Answer 6

brain is comprised of functionally different parts therefore it evolves independently

Question 7

what is the principle of proper mass (harry jerrison)

Answer 7

Principle of proper mass : mass of neuron tissues that control particular function is appropriate to the amount of information processing involved in performing function

suggests importance of a regions functions in a species life