Answer:
Explanation: because they caused redistribution between continents, create volcanos and mountains that help populations adapt
Colonies of blue color are produced by cells with functioning copies of beta galactosidase, while on the other hand, colonies of white color are produced by cells with mutations in the lacZ or in the lacY genes. Lac operon consists of three structural genes, and a promoter, a terminator, regulator, and operator. The structural genes are lacZ, lacY, and lacA. lacZ encodes beta galactosidase, which is an intracellular enzyme that cleaves lactose into glucose and galactose
Covalent bonds are formed when two atoms are able to <em>share</em> electrons.
Iroinic bonds are form when two atoms are <em> </em> electrons from each other to complete the bond. This results in a pair of ions.
<u>Covalent bonds:</u>
- Have a definite shape.
- Have a low melting point.
- At room temperature they are in a liquid or gas.
- They occur between two non-metals.
<u>Ionic bonds:</u>
- Have no definite shape.
- Have a high melting point.
- At room temperature they are solid.
- They occur between a metal and a nonmetal.
Answer:
I<em> think</em> it's only one allele is required to express the trait.
Explanation: