<span>Homologous chromosomes exchange DNA during meiosis in a process called crossing-over. Crossing-over sometimes involves an unequal swapping of DNA. Basically one chromosome in the pair gets extra DNA.</span>
DNA is the molecule that contains the genetic information that is transmitted hereditary and controls the cellular functioning
Answer: The correct option is <span>a long carbon and hydrogen chain and a carboxyl group.
Reason: Fatty acid is basically consists of two main parts:
a hydrocarbon tail connected with carboxylic group as shown in the figure.</span>
Nearly all of the energy comes from the sun
When an individual muscle fiber receives a threshold stimulus, it contracts as much as possible. ... a threshold stimulus is the minimum amount of energy needed to make a muscle fiber contract.