Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 million years old. dna fingerprinting and comparison with today's living cockroaches revealed that modern cockroaches have certain additional genes which allow them to survive in today's colder climate. which of these could be the correct explanation for this discovery?

change in gene frequency of ancient cockroaches led to the evolution of modern cockroaches.

somatic modification in ancient cockroaches led to the evolution of modern cockroaches.

modification of all the genes of ancient cockroaches led to the evolution of modern cockroaches.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.