GENETICS AND EVOLUTION
EVOLUTION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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homologous structures
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fossils
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analogous proteins
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universal genetic code in DNA
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Detailed explanation-1: -Ancestral organism shared by two or more descendent lineages-in other words, an ancestor that they have in common. For example, the common ancestors of two biological siblings include their parents and grandparents; the common ancestors of a coyote and a wolf include the first canine and the first mammal.
Detailed explanation-2: -DNA is considered a universal genetic code because every known living organism has genes made of DNA. Bacteria, fungi, cats, plants, and you: every organism uses DNA to store genetic information. All organisms also use DNA to transcribe RNA, and then they translate that RNA into proteins.
Detailed explanation-3: -The basic idea behind this approach is that two species have the “same” gene because they inherited it from a common ancestor. For instance, humans, cows, chickens, and chimpanzees all have a gene that encodes the hormone insulin, because this gene was already present in their last common ancestor.
Detailed explanation-4: -Which of the following are molecular evidences for common descent?-All organisms use the same DNA triplet code and the same amino acids in their proteins.