I think at 7-8 week of development this happens
Answer:
notochord, a dorsal hollow nerve cord and pharyngeal slits.
Answer: Hi.... I hope it helps!!
Skin Pigmentation in humans
Explanation: Polygenic inheritance- It is simply a single characteristic which is controlled by more than two genes. Human skin's color is determined by the amount of dark pigment it has which is melanin
. Minimum four genes are involved in the melanin production.
It is a case of continuous variation as the combination of melanin producing allele are responsible for degree of pigmentation
The type of solution that would cause a bacterium with a weak or damaged cell wall to burst as water moves into the cell is a hypotonic solution.
When a bacteria with a weak cell wall is kept in a hypotonic solution, the concentration of the water outside the cell is large, and within the cell it is low. This concentration gradient of water forces the water from the outside to exert force onto the cell wall. If the cell wall is weak, then the water rushes in bursting the cell.
