Answer:
Crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatic.
Explanation:
A. teeth breaks food into smaller pieces. saliva moistens the food and makes it easier to swallow. the tongue rolls the food into a bolus.
B. food passes through by peristalsis from mouth to stomach.
C. muscular walls squeeze on food to make it semi-liquid. gastric juice contains protease to digest proteins.
D. absorption of water
E. contains enzymes that digest carbohydrate, fat and protein. absorb nutrients and water.
F. stores faeces
G. serves as a pathway for the movement of food from the mouth to the oesophagus.
liver produces bile. sotred in gallbladder.
insulin. regulate the blood glucose level.
Answer:
How to figure out how soil
Explanation:
edit: sorry if wrong :[
edit: it is showing how the under the soil there is a substance that is holding it up
Answer:
Dr. James Watson and Francis Crick
Explanation:
It was Dr. Rosalinda Franklin who first take a picture of DNA in its helical structure. Using this picture of Dr Franklin, Dr. James Watson and Francis Crick recognized from the image and suggested that the DNA has a double helix structure. They assemble a model of the DNA structure and wrote a paper describing the DNA as a double helix.