When does crossing over occur in meiosis?
a prophase 2
b metaphase 2
c metaphase 1
d prophase 1

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Packet fragmentation is not normal, and can only occur if an attack has been initiated. true false

What is a food chain? a.different animals located in different communities b. energy transferred from the sun to plants and then to a series of living things c. rows of crops, such as lettuce, in a field d.animals using one another as food for energy and growth