Homologus traits
- The two different species that possess the same homologus trait are humans and apps.
- The homologus trait between humans and apes is that they both have four limbs which are the arms and legs. The human skeleton is designed to walk upright. Ape skeletons have a forward-leaning stance, short legs, and long arms, are suited to walking on four legs. Apes finger are curved, opposed to the straight human fingers. Human pelvic blades are angles front to back, making it easier for us to walk gracefully, oppose to side by side. Apes pelvic blades are flare out causing them to lurch side by side. Humans and apes have similar joint structure but the space where the ape upper arms connect to the shoulder blades tilted upward, allowing the ape to raise it arms upward without little muscle effort.
- Humans share a common ancestor with modern African apes, like gorillas and chimpanzees. Scientists believe this common ancestor existed 5 to 8 million years ago. They believe that shortly after that, the species diverged into two separate lineages. Eventually one evolved into gorillas and chimps, and the other evolved into early human ancestors called hominids.
Analogous trait
1. The two different species that posses the analogous trait are the falcon and the butterfly.
2. Butterflies are flying insects with two pairs of scaly wings and two clubbed antennae. Like all insects, they have a three-part body which is the head, thorax and abdomen, 3 pairs of jointed legs, compound eyes, and a segmented exoskeleton. A butterfly has four wings, two forewings and two hind wings. They are attached to the second and third thoracic segments. When at rest, butterflies hold their wings vertically. Falcons are strong, fierce birds with hooked bills and large feet armed with long, curved talons. Keen-eyed and swift in flight, they commonly pursue their preys which are smaller birds and small mammals with the help of their fast wing. The wings of falcons are long and pointed instead of short and rounded, and the upper part of the bill is notched instead of smooth and also have feathers.
3. The butterfly and the falcon do not posses a common ancestor. The butterfly is from the insecta class and the falcon is from the aves class.
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I loved your post. It was filled with a lot of good information. It took me a while to come up with animals for my post. How did you come up with yours? I didnt know butterflies actually had 4 wings, i thought they were just two. But now that y ou really think about it, it makes sense that they wings are in two pieces.
ReplyDeleteGood job with the post. Just a couple of questions/comments. First, where did you get the image of the ape/human skeleton? Also, keep in mind, that all life on this planet likely originated from a common source, so if you go back far enough in time, all organisms have a common ancestor, even birds and butterflies (about 600 MYA). The question is, did that common ancestor have wings? Unlikely, but regardless, the wings of birds arose independently from their rise from the dinosaurs. They didn't inherit them from more distant ancestors. That makes these traits analogous.
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