A proline codon would replace the arginine codon due to the mutation. GCA encodes for glycine, while GGU, GGC, or GGG also specify glycine. This change will result in a proline codon appearing in the complementary DNA or RNA strand. The proline codons are CCT, CCC, CCA, and CCG. If no mutation occurred, arginine would be encoded by the complementary codons CGT, CGC, CGA, or CGG.
The right answer is option d as its absence would impact many organisms in the ecosystem.
Keystone species are crucial for the ecosystem's health. If such a species were to disappear from an ecosystem, it would disrupt the ecosystem's functioning, leading to significant consequences. Therefore, keystone species are vital for the ecosystem's survival.
Answer:
One could cheekily remark that both are cells.
Some organisms have adapted in such a way that they stay inactive during the active hours of their predators. The adaptive theory of sleep posits that prey tend to rest at night when their predators are most active, using this time to rejuvenate and gather energy for various tasks. By remaining inactive and sheltered, prey decrease their chances of being hunted.
Thus, the answer is the adaptive theory of sleep.
