Abiologist discovered a young four legged animal .the animal had lungs seemed to fertilize internally and it's outer surface was covered with scales in which class of animal is biologist likely to place the animal

I personally would classify this animal as Reptilia because this sounds like a reptile to me. I hope this helps! :)

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.

answer; i believe the correct answer is (replication is not conservative);