Homework Answers
1.- You have to divide the time required by the number of base changes, that is:
60/8 = 7.5 million years
Your teacher made a mistake, the answer is not in the options. I could bet he meant to write 40 million years in the exercise data so "5 million years" would be the answer
2.- a) Salamanders are equally related to crocodiales and mice. For salamanders, crocodiles and mice are both species inside of a group that is the sister group to them (salamanders)
3.- e) 1, 2, 3, 5, 4. Both photosynthesis and ETC appeared before the eukaryotic cell, but ETC appeared after photosynthesis since it requires the oxygen from this one. Then, Cryogenian period occurred before animals colonized the land, in this period actually lies the origin of animals
4.- b) None of these is true. Remember that the expression "more evolved" is invalid in biological evolution, all the species in a given time moment are just equally evolved but in different directions
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A gene in species A has an orthologous counterpart in species B. When the two genes...
According to this phylogenetic tree, which of the following is tru Lamprey Common ancestor Perch Salamander...
According to this phylogenetic tree, which of the following is tru Lamprey Common ancestor Perch Salamander Lizard Crocodile Pigeon Mouse Chimpanzee Mammals Amniotes Tetrapods Vertebrates Select one: a. More than 1 of these is true. b. Crocodiles are more closely related to mice than to salaman C. Crocodiles are more closely related to salamanders than to r x d. Salamanders are equally related to crocodiles & mice. e. Crocodiles are equally related to mice & salamanders. According to the phylogeny,...
The Kingdom Monera Select one: a. All of these X b. was the third kingdom of...
The Kingdom Monera Select one: a. All of these X b. was the third kingdom of life to be introduced C. includes all prokaryotes d. is a monophyletic taxon e. was introduced as a direct result of improvements to the light microscope The half-life of carbon-14 is roughly 5,700 years. In the pre-industrial atmosphere, there was approximately one atom of carbon-14 for every trillion atoms of carbon-12. In a fossil that is 17,100 years old, how many atoms of carbon-12...
6) On the tree shown, the numbers represent 7 different species. a) Which pair of species...
6) On the tree shown, the numbers represent 7 different species. a) Which pair of species is more closely related: 4 and 5 or 5 and 7? b) Which pair is more closely related: 1 and 2 c) Which pair is more closely related: 3 and 5 or 2 and 7? or 2 and 4? d) What type of group is made of 3, 5 and 7? e) What type of group is 5 and 6? f) Describe a monophyletic...
Until recently, there were two competing theories about the origin of our species- "modern Homo sapiens"....
Until recently, there were two competing theories about the
origin of our species- "modern Homo sapiens". The first (single
African origin) is that all modern humans descended from a recent
ancestor in Africa, less than 200,000 years ago, and that our
ancestors replaced the archaic human species they found in their
migrations, including Neanderthals and Denisovans. (In the last few
years evidence from nuclear genomes of fossil humans has indicated
that there was limited interbreeding between the ancestors of
modern...
Considering the phylogeny of the extant orders of sharks to the left answer questions 1-3. 1....
Considering the phylogeny of the extant orders of sharks to the left answer questions 1-3. 1. If shark orders H, F, C, and A are collectively considered the "cool sharks." what type of group are the cool sharks? A. Monophyletic B. Paraphyletic C. Polyphyletic D. Cooliphyletic E. None of the above 2. Which of the groups labeled on the tree is the outgroup? A. A B. G C. Rays E. None of the above 3. Which of these statements is...
phylogenic tree help 11. For this question, refer to FIG. 24.2 (p. 487) "The family tree...
phylogenic tree help
11. For this question, refer to FIG. 24.2 (p. 487) "The family tree of the lesser and great apes."This figure shows the derivation of "earlobes". Assume that evolution has not reversed this character state in any of the descendants of this ancestor which evolved earlobes. Given this, what do we know about earlobes? Orangutan Gibbon (14 species in 4 genera) Gorilla Bonobo Chimpanzee Human ebepodeny Robust canine teeth Prosimians: Bushbabies New World Old World and lemurs monkeys...
All of the features below are features that characterize humans, though very few of them are...
All of the features below are features that characterize humans,
though very few of them are unique to humans. Rather, most of them
are present in our species because of our evolutionary history
(they were present in an ancestral species at some point in time,
and eventually passed on to us). For example, the bilateral
symmetry that characterizes the human body plan is a feature that
evolved in a primitive animal species that lived hundreds of
millions of years ago;...
A hypothetical phylogenetic tree is shown in Figure Q4-2. Use this tree to answer the following...
A hypothetical phylogenetic tree is shown in Figure Q4-2. Use
this tree to answer the following question.
1. How many years ago did species M and N diverge from their
last common ancestor? Are M and N more or less closely related to
each other than P and S? In looking for functionally important
nucleotide sequences, is it more informative to compare the genome
sequences of M and N or those of M and Q? Explain.
last common ancestor million...
Will give a like if answer all these questions! Part A Assess whether the current dramatic...
Will give a like if answer all these questions!
Part A Assess whether the current dramatic decline in sharks is more likely the effect of background extinction or a mass extinction. (Some shark populations have dropped to just 5 percent of their former abundance over the past few decades due to overfishing.) O Overfishing is more similar to a mass extinction event than to background extinction, because sharks are harvested no matter how well adapted they are to their environment....
Which of the following is true of a disease that is caused by a single gene...
Which of the following is true of a disease that is caused by a single gene found on the X chromosome of the sex chromosomes in humans? 1. Males inherit these diseases more often than females because they have only one X chromosome in the pair of sex chromosomes. 2. Males and females inherit these diseases at an equal rate, gender does not influence the DNA. 3. Females inherit these diseases twice as often as males, because they have two...
According to this phylogenetic tree, which of the following is tru Lamprey Common ancestor Perch Salamander Lizard Crocodile Pigeon Mouse Chimpanzee Mammals Amniotes Tetrapods Vertebrates Select one: a. More than 1 of these is true. b. Crocodiles are more closely related to mice than to salaman C. Crocodiles are more closely related to salamanders than to r x d. Salamanders are equally related to crocodiles & mice. e. Crocodiles are equally related to mice & salamanders. According to the phylogeny,...
The Kingdom Monera Select one: a. All of these X b. was the third kingdom of life to be introduced C. includes all prokaryotes d. is a monophyletic taxon e. was introduced as a direct result of improvements to the light microscope The half-life of carbon-14 is roughly 5,700 years. In the pre-industrial atmosphere, there was approximately one atom of carbon-14 for every trillion atoms of carbon-12. In a fossil that is 17,100 years old, how many atoms of carbon-12...
6) On the tree shown, the numbers represent 7 different species. a) Which pair of species is more closely related: 4 and 5 or 5 and 7? b) Which pair is more closely related: 1 and 2 c) Which pair is more closely related: 3 and 5 or 2 and 7? or 2 and 4? d) What type of group is made of 3, 5 and 7? e) What type of group is 5 and 6? f) Describe a monophyletic...
Until recently, there were two competing theories about the
origin of our species- "modern Homo sapiens". The first (single
African origin) is that all modern humans descended from a recent
ancestor in Africa, less than 200,000 years ago, and that our
ancestors replaced the archaic human species they found in their
migrations, including Neanderthals and Denisovans. (In the last few
years evidence from nuclear genomes of fossil humans has indicated
that there was limited interbreeding between the ancestors of
modern...
Considering the phylogeny of the extant orders of sharks to the left answer questions 1-3. 1. If shark orders H, F, C, and A are collectively considered the "cool sharks." what type of group are the cool sharks? A. Monophyletic B. Paraphyletic C. Polyphyletic D. Cooliphyletic E. None of the above 2. Which of the groups labeled on the tree is the outgroup? A. A B. G C. Rays E. None of the above 3. Which of these statements is...
phylogenic tree help
11. For this question, refer to FIG. 24.2 (p. 487) "The family tree of the lesser and great apes."This figure shows the derivation of "earlobes". Assume that evolution has not reversed this character state in any of the descendants of this ancestor which evolved earlobes. Given this, what do we know about earlobes? Orangutan Gibbon (14 species in 4 genera) Gorilla Bonobo Chimpanzee Human ebepodeny Robust canine teeth Prosimians: Bushbabies New World Old World and lemurs monkeys...
All of the features below are features that characterize humans,
though very few of them are unique to humans. Rather, most of them
are present in our species because of our evolutionary history
(they were present in an ancestral species at some point in time,
and eventually passed on to us). For example, the bilateral
symmetry that characterizes the human body plan is a feature that
evolved in a primitive animal species that lived hundreds of
millions of years ago;...
A hypothetical phylogenetic tree is shown in Figure Q4-2. Use
this tree to answer the following question.
1. How many years ago did species M and N diverge from their
last common ancestor? Are M and N more or less closely related to
each other than P and S? In looking for functionally important
nucleotide sequences, is it more informative to compare the genome
sequences of M and N or those of M and Q? Explain.
last common ancestor million...
Will give a like if answer all these questions!
Part A Assess whether the current dramatic decline in sharks is more likely the effect of background extinction or a mass extinction. (Some shark populations have dropped to just 5 percent of their former abundance over the past few decades due to overfishing.) O Overfishing is more similar to a mass extinction event than to background extinction, because sharks are harvested no matter how well adapted they are to their environment....
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