One primitive trait of Ardipithecus ramidus is its opposable big toe
- The hominin species Ardipithecus ramidus has large grabbing toes that make it better adapted for walking than chimpanzees at climbing trees.
- An australopithecine species called Ardipithecus ramidus lived 4.4 million years ago in the Afar area of Early Pliocene Ethiopia (mya). Contrary to modern hominids,
- A. ramidus has adaptations for both life in the trees and walking on two legs (bipedality) (arboreality).
- The anatomy is quite simple. Upper canines are evolved from Australopithecus afarensis and have a diamond form as opposed to the pointed shape seen in African apes.
- It appears that lower canines have less developed characteristics.
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set the fish in somewhere to rest it on and squeeze the liquid out of the fish, then put the liquid into a test tube and mix it with water, wait and then look at it.
There are common elements for humans genetic codes, so, in a sense, they have exactly the same type of units defining it, yet the combination of thrm can determine, among others, the phisical characteristics of a person
Cladogram shows that Osteichthyes should be under group A. Going back to their characteristics, they’re a group of fish that have the derived characteristics of jaws and true bones. So, moving backwards from group A these derived characteristics are clearly traceable, wherein each line is showing a relationship/connection.
Answer: DNA Ligase
Explanation:
During DNA replication, both the parental DNA strands are separated and act as templates for the synthesis of new strands. The formation of the new strands occurs in only 5'-3' direction and thus both the strands are synthesized in a different manner. One new strand with the template of 3'-5' direction will be synthesized continuously and is called a leading strand. The other strand with the template of 5'-3' direction will be synthesized discontinuously in the form of DNA fragments. These fragments are called Okazaki fragments and the strand is called a lagging strand. DNA ligase connects these fragments later to form a continuous lagging strand.
Therefore, DNA ligase is required for ligation of Okazaki fragments, and in absence of DNA ligase, the ligation of fragments will not occur and the newly synthesized strand will be discontinuous. However, if DNA ligase is not present in the reaction mixture, then the chances are that not all the newly synthesized DNA strands will be discontinuous. Only the DNA molecule with the lagging strand will be in the form of fragments.
