Answer:
If the string of beads refer to a chromosome, then each bead is a gene responsible for one or more traits.
If the string of beads refer to a gene, then each bead refers to the sequence of nitrogenous bases in one strand of the gene.
Explanation:
A chromosome is composed of several genes.
A gene is composed of several nucleotides each containing a nitrogenous base. A gene is primarily made functional by the sequence of nitrogenous bases in its structure. If AGATTCA is a hypothetical sequence of the nitrogenous bases on one strand of a hypothetical gene then TCTAAGT will be the sequence of nitrogenous bases on the complementary strand of that particular gene.
The Opponent-Process theory of color vision holds that we perceive colors because of pairs the receptors that make antagonistic responses. <span />
Independent: amount of sleep
dependent: grades
Answer:
<em>This is an example of natural selection (adaptation).</em>
Explanation:
Natural selection tends to favor those organisms which are better adapted to live in an environment.
As tortoises having flat shell and long neck were better adapted to live in barren area, hence through natural selection those organisms were favored in such an ecosystem.
As tortoises that lived on the vegetative lands were more adapted to live in such an ecosystem, hence through natural ecosystem these organisms were favored and increased in numbers.
