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If you were a scientist examining the DNA sequence of two unknown organisms that you hypothesize share a common ancestor what evidence would you except to find?
I would expect to find similarities in their DNA sequences, such as similar genes or genetic markers, that suggest a common evolutionary history. These similarities may include shared gene sequences, regulatory elements, or other genetic features that indicate a shared ancestry. Additionally, I would look for differences in the DNA sequences that have accumulated over time, reflecting the divergent evolution of the two organisms.
Which group of organisms would have the most recent common ancestor the members of a clade corresponding to a genus or the members of a clade corresponding to an order?
The group of organisms within a genus would have the most recent common ancestor compared to a group within an order. This is because a genus represents a subset of species that are more closely related and share a more recent common ancestor than the broader group represented by an order.
What common ancestor does all life share?
The last universal common ancestor (or LUCA) for all known life would have been some single celled organism similar to prokaryotes. It might have been an RNA or DNA based organism, but it would have used more or less the same genetic code as all modern organisms (with a few minor variations) today. It will probably have lacked a true cellular nucleus, and many of the organelles that modern organisms have, but it would still have used ATP as a key factor in its metabolism. Note that, like with all Most Recent Common Ancestors for any group, it is not necessary that a single species of organism is the sole ancestor for all modern life. It may well be possible that different species contributed to modern life (see also: multiple origins hypotheses). There will be one single ancestor common to any specific set of traits in all the diverging lineages, but, depending on the set of traits examined, they may lead to different origins. Compare, for instance, to mt-DNA Eve and Y-chromosome Adam: there is one most recent common ancestor for all surviving variations of mitochondrial DNA via matrilineal descent, but there is a different ancestor, living in a different era, for all variant Y-chromosomes surviving through patrilinial descent. It is, however, likely that there was, at some time, indeed one single species or closely linked collection of species of organisms from which all modern life descends. Also note that LUCA concerns only the most recent of such ancestral organisms: it itself would have had ancestors, and shared ancestors with other lineages existing at the time.
What information can be obtained from a cladogram?
Cladograms tell you which animals are the closet in relationship, which are the farthest, what characteristics the animals have in common, what characteristics they would need to have in order to be closely related to them, and the number of shared characteristics between the animals.
HOW ARE THE AREA OF STUDY -EVOLUTION AND CLASSIFICATION-INTERLINK?
Evolutionary relationships are traced in the classification of organisms. For classification of organisms, we look for similarities among organisms which allows us to group them. The more characteristics two species will have in common, the more closely they are related. It indicates that more closely two species are related, the more recently they would have had a common ancestor. Thus, classification of species is in fact a reflection of their evolutionary relationship.
If you were a scientist examining the DNA sequence of two unknown organisms that you hypothesize share a common ancestor what evidence would you except to find?
I would expect to find similarities in their DNA sequences, such as similar genes or genetic markers, that suggest a common evolutionary history. These similarities may include shared gene sequences, regulatory elements, or other genetic features that indicate a shared ancestry. Additionally, I would look for differences in the DNA sequences that have accumulated over time, reflecting the divergent evolution of the two organisms.
Which group of organisms would have the most recent common ancestor the members of a clade corresponding to a genus or the members of a clade corresponding to an order?
The group of organisms within a genus would have the most recent common ancestor compared to a group within an order. This is because a genus represents a subset of species that are more closely related and share a more recent common ancestor than the broader group represented by an order.
Evidence life evolved from a single ancestor?
The evidence for life evolving from a single ancestor includes the universal genetic code shared by all organisms, the presence of homologous structures across different species, and the nested hierarchy of similarities in the genetic code and morphology. Additionally, studies on molecular phylogenetics and the fossil record provide further support for the common ancestry of all life forms on Earth.
What would you conclude if you learned that an elephant and a hyrax a small rodent like animal had similar DNA?
I would conclude that elephants and hyraxes share a common ancestor in evolutionary history, explaining the similarities in their DNA despite their vast differences in size and appearance. This suggests that they diverged from a shared ancestor relatively recently in evolutionary terms.
What are the differences between a synapomorphy and a homologous trait?
A trait shared by at least two and perhaps more taxa and devolving on common ancestry is synapomorphy. A homologous trait is quite similar. The forelimbs of all tetrapods are devolved from common ancestry and would be traits shared by many taxa and homologous traits. Cladists use the word synapomorphy more to show closer relationships. Pliesiomorphy is the word cladists use to show more ancient relationships.
Where would you go to find out if someone was your cousin?
You need to find out if you have a common ancestor, as this is what determines if you are cousins. If your common ancestor is your grandfather, you are 1st cousins. If your common ancestor is your great-grandfather, you are 2nd cousins. If your common ancestor is your grandfather and their great-grandfather, you are 1st cousins once removed. It can get complicated, so once you find your common ancestor, come back and let us know, and someone can tell you exactly.
What common ancestor does all life share?
The last universal common ancestor (or LUCA) for all known life would have been some single celled organism similar to prokaryotes. It might have been an RNA or DNA based organism, but it would have used more or less the same genetic code as all modern organisms (with a few minor variations) today. It will probably have lacked a true cellular nucleus, and many of the organelles that modern organisms have, but it would still have used ATP as a key factor in its metabolism. Note that, like with all Most Recent Common Ancestors for any group, it is not necessary that a single species of organism is the sole ancestor for all modern life. It may well be possible that different species contributed to modern life (see also: multiple origins hypotheses). There will be one single ancestor common to any specific set of traits in all the diverging lineages, but, depending on the set of traits examined, they may lead to different origins. Compare, for instance, to mt-DNA Eve and Y-chromosome Adam: there is one most recent common ancestor for all surviving variations of mitochondrial DNA via matrilineal descent, but there is a different ancestor, living in a different era, for all variant Y-chromosomes surviving through patrilinial descent. It is, however, likely that there was, at some time, indeed one single species or closely linked collection of species of organisms from which all modern life descends. Also note that LUCA concerns only the most recent of such ancestral organisms: it itself would have had ancestors, and shared ancestors with other lineages existing at the time.
What is a common ancestor?
a common ancestor is a species that multiple species share as the species they descended froma person born or that has lived before you and the word common means the same SO ....... its when you have the same descendant or person who lived before you or an ancestor that's the same
What would your husbands niece be to you?
You aren't related. You do not share a common ancestor.
The number and location of bones of many fossil vertebrates are similar to those in living vertebrates Most biologists would probably explain this fact on the basis of a the needs of the organisms?
No, b) a common ancestor.
Which process would explain why organisms have different characteristics if they evolved from a common ancestor?
The process of natural selection explains why organisms have different characteristics when they evolve from a common ancestor. In a given environment, individuals with variations that confer a better chance of survival and reproduction are more likely to pass on their genes to the next generation. Over time, this leads to the accumulation of different traits in different populations, resulting in species diversity.
What relationship would my first cousin's child be to my grandchild?
They would be second cousins, once removed. The descent is from a common ancestor. Thus 1st cousins share a grandparent as a common ancestor. 2nd cousins share a great-grandparent as an ancestor. If the descent from the common ancestor is not an equal number of generations, the inequality is expressed as 'removed' from the oldest generation being compared.
