New matter is not created because matter can neither be created nor destroyed (or so is said) where the matter comes from is from the matter it takes in such as sunlight, nutrients, water, and carbon dioxide, hope i helped.
Because you need 46 chromosomes for your body to work well. If you don’t have 46 chromosomes you must have mutation or any disease
Independent: The second group is not given the drug.
Dependent: Dr. Smith wants to examine weather a new drug increases the maze running performance of older rats.
Constants: Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze.
Answer:
All of the F1 progeny would be wild-type.
If the two mutations are in different genes, then we expect complementation to occur (each mutant strain provides a functional copy of the gene that is defective in the other strain) and wild-type progeny to be produced
Answer: A. a ring of actin filaments forms at the metaphase plate. The ring contracts, forming a cleavage furrow, which divides the cell in two. In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast.
Explanation:
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