Q4.5. A scientist came across two populations of beetle species, each pure-breeding. One population was all red in color; the other was all black. The scientist mated one red beetle with one black beetle, and the offspring were all black. What is the dominance relationship between the two alleles

black allele is dominant over red

Explanation:

this type is called complete dominance where one allele takes over the other completely.

yes? sounds right, but you didn’t ask a question.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.