Your outer skin is your epidermis, so just look at your arm
A cladogram containing a zebra, bear, lion, and tiger, should look like this:
mammalia
I I
carnivora perissodactyla
I I I
arctoidea feliformia equidae
I I I
ursidae felidae equini
I I I
ursus pantherinae equus
I
panthera
I I
panthera tigris panthera leo
All four animals are part of the mammals, thus it is the closest relation they all have. Further, the lion, tiger, and bear are part of the carnivores, while the zebra is part of herbivores, thus purring the first three to be more closely connected. The bear than diverges into its own family, while the lion and tiger remain in the same, thus making them the most closely related. So we have the lion and tiger to be the closest, than comes the bear, being closer to them then to the zebra, and then comes the zebra which is connected with the other three much further back in the past.
Answer:
Crossing over or recombination
Explanation:
Crossing over or genetic recombination is a stage in the late prophase of meiosis I where homologs lie close to each other in pairs to exchange chromosomal material creating new combination of genes as each homologs is derived from either the father or the mother.
This exchange determines the material to be inherited by the offspring producing genetic variation which males the offspring typically different from the parents (genetic variation).