Answer:
a. Copper contamination in the soil created copper-tolerant plants.
Explanation:
Those plants that are cultivated on the soil having high concentration of copper in the soil creates tolerance to copper and becomes copper tolerant crops. Copper is a metal which is required for the process of photosynthesis and component of many enzymes but excess amount of copper cause damage to the plants especially root tips. But there are several plants which are tolerance to high amount of copper in the soil such as monkey flowers.
They are called “sister chromatids”
Capsid is the component of a virus that is lacking in its cell
A capsid is the protein shell that surrounds a virus. Capsids functions by protecting the nucleic acids of a virus while interacting with the host environment. Capsids are made up of many oligomeric structural subunits that contains the protein; protomers. Capsids are generally grouped based on their structure. The common ones are helical and icosahedral.
