Homework Answers
Homology is derived from the Greek homologos or homos which means same and logos means relation
Similar biological structures or sequences of DNA in different taxa are said to be homologous if they are derived from a common ancestor. Thus it implies divergent evolution.
For example, the forelimbs of ancestral vertebrates have evolved
into whales' Front Flippers, birds's wings,humans's grappling hand,
etc.
Hence homologies can be anatomical characters which indicate
descent from a common ancestor.
Thus the answer is True.
Add Answer to:
Homologies (between different species) are anatomic characters which indicate descent from a common ancestor a. True...
Outgroup analysis looks for features that are shared derived characters in a give n group of orga...
Outgroup analysis looks for features that are shared derived characters in a give n group of organısms. a. True b. False A paraphyletic group consists of several evolutionary lines that do not share a common ancestor. a. True b. False Systematists use phylogenetic trees to graphically represent hypothesized evolutionary relationships among ganisms. a. True b. False A characteristic that is independently acquired by reversal or convergent evolution exhibits homology. a. True b. False Mammalia is a class the contains many...
True or False, it's likely that organisms other than LUCA (Last Universal Common Ancestor) existed alongside...
True or False, it's likely that organisms other than LUCA (Last Universal Common Ancestor) existed alongside LUCA before the divergence of bacteria from archaea and eukaryotes. True; their evolutionary lines just went extinct so there is no evidence of them True; each one diverged into their own domains that we see today False; by definition, LUCA is the only thing to exist back then False; while LUCA may have looked different and evolved over time, it was the only type...
ultiple choice (worth 2 pts. each): Which pair of primates shares the most ancient common ancestor?...
ultiple choice (worth 2 pts. each): Which pair of primates shares the most ancient common ancestor? a) humans and bonobos b) humans and orangutans c) humans and gibbons d) humans and chimps e) humans and gorillas T/F Primate food resources are often patchily distributed in space and time. a) True b) False Which primate group is least represented in current number of world species? a) prosimians b) New World monkeys c) apes d) humans e) Old World monkeys
Which of the following statements about Poeceilopsis occidentalis and Poeceliopsis sonorensis are true? A) Crosses between...
Which of the following statements about Poeceilopsis occidentalis and Poeceliopsis sonorensis are true? A) Crosses between the two species exhibit very low clutch sizes, and a peculiar, male-biased sex ratio. B) Males prefer to mate with their own species, but in a pinch, they will mate with females of the other species too. C) The two species share a common ancestor, approximately one to two million years ago. D) B and C E) All of the above.
Identify some characters that distinguish hominins from other apes. Provide an example in which different features...
Identify some characters that distinguish hominins from other apes. Provide an example in which different features of organisms in the hominin evolutionary lineage evolved at different rates. WHAT IF? Some genetic studies suggest that the most recent common ancestor of Homo sapiens that lived outside of Africa left Africa about 50,000 years ago. Compare this date with the dates of fossils given in the text. Can both the genetic results and the dates ascribed to the fossils be correct? Explain.
See Hint Several organisms have a homologous protein inherited from a common ancestor) that is highly...
See Hint Several organisms have a homologous protein inherited from a common ancestor) that is highly similar at the amino acid level. You are comparing the genes that code for these proteins in the different organisms when you note that one of the codon nucleotide positions shows more nucleotide variation than the other nucleotide positions. In which codon nucleotide position do you expect to see the most variability among species? Choose one: A fourth nucleotide position B. third nucleotide position...
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,...
11) Indicate whether the statement about nucleophilicity is or True or False: a) A species with a...
11) Indicate whether the statement about nucleophilicity is or True or False: a) A species with a negative charge is a stronger nucleophile than a similar neutral species. (True / False) b) In particular, a base is a stronger nucleophile than its conjugate acid. (True / False) c) Nucleophilicity decreases from left to right in the periodic table, following the increase in electronegativity from left to right. (True / False) d) The more electronegative elements have more tightly held nonbonding electrons...
5. Jack Feldon has hypothesized that these species descended from a common ancestor via dispersal. Specifically,...
5. Jack Feldon has hypothesized that these species descended from a common ancestor via dispersal. Specifically, he proposes that the original species was confined to the western side of the mountains. One dispersal event brought individuals around the northern end of the mountains; the river prevented them from dispersing farther south. Some time later, a second dispersal event brought individuals around the southern end of the mountains; dispersal of these individuals was also stopped by the river. If his hypothesis...
A gene in species A has an orthologous counterpart in species B. When the two genes...
A gene in species A has an orthologous counterpart in species B. When the two genes are compared, a total of eight base- pair differences are found. The fossil record indicates that the last common ancestor of A and B lived 60 million years ago. What is the average rate at which base-pair mutations accumulate in these orthologous genes? One base-pair change every Select one: a. 10 million years O b. 2 million years O c. 20 million years O...
Outgroup analysis looks for features that are shared derived characters in a give n group of organısms. a. True b. False A paraphyletic group consists of several evolutionary lines that do not share a common ancestor. a. True b. False Systematists use phylogenetic trees to graphically represent hypothesized evolutionary relationships among ganisms. a. True b. False A characteristic that is independently acquired by reversal or convergent evolution exhibits homology. a. True b. False Mammalia is a class the contains many...
ultiple choice (worth 2 pts. each): Which pair of primates shares the most ancient common ancestor? a) humans and bonobos b) humans and orangutans c) humans and gibbons d) humans and chimps e) humans and gorillas T/F Primate food resources are often patchily distributed in space and time. a) True b) False Which primate group is least represented in current number of world species? a) prosimians b) New World monkeys c) apes d) humans e) Old World monkeys
Identify some characters that distinguish hominins from other apes. Provide an example in which different features of organisms in the hominin evolutionary lineage evolved at different rates. WHAT IF? Some genetic studies suggest that the most recent common ancestor of Homo sapiens that lived outside of Africa left Africa about 50,000 years ago. Compare this date with the dates of fossils given in the text. Can both the genetic results and the dates ascribed to the fossils be correct? Explain.
See Hint Several organisms have a homologous protein inherited from a common ancestor) that is highly similar at the amino acid level. You are comparing the genes that code for these proteins in the different organisms when you note that one of the codon nucleotide positions shows more nucleotide variation than the other nucleotide positions. In which codon nucleotide position do you expect to see the most variability among species? Choose one: A fourth nucleotide position B. third nucleotide position...
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,...
5. Jack Feldon has hypothesized that these species descended from a common ancestor via dispersal. Specifically, he proposes that the original species was confined to the western side of the mountains. One dispersal event brought individuals around the northern end of the mountains; the river prevented them from dispersing farther south. Some time later, a second dispersal event brought individuals around the southern end of the mountains; dispersal of these individuals was also stopped by the river. If his hypothesis...
A gene in species A has an orthologous counterpart in species B. When the two genes are compared, a total of eight base- pair differences are found. The fossil record indicates that the last common ancestor of A and B lived 60 million years ago. What is the average rate at which base-pair mutations accumulate in these orthologous genes? One base-pair change every Select one: a. 10 million years O b. 2 million years O c. 20 million years O...
Most questions answered within 3 hours.
-
Consider the reaction, C3 H8 + O2 --> CO2 + H2O. How many
moles of O2...
asked 50 minutes ago -
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 1 hour ago -
In a study of the accuracy of fast food drive-through orders,
Restaurant A had 257 accurate...
asked 1 hour ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 1 hour ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 1 hour ago -
What is an example of a limitation in implementing a new
ERP system and how it...
asked 1 hour ago -
In a section of 9.7cm of an artery with a radius of 2.6mm there
is a...
asked 1 hour ago -
the two carboxylic acid groups of aspartic acid have different
acidities with pKa values of 2.1...
asked 1 hour ago -
Would CuCO3 aqueous salt combined with calcium chloride
form a solid precipitate? If so, what would...
asked 1 hour ago -
How do ECM Solutions assist in embedding a culture of continuous
improvement in an organization? (Project...
asked 1 hour ago -
Directions
These directions introduce the idea of Essential Questions.
Since this may be a new concept...
asked 1 hour ago -
1.b. Fiscal policy is said to suffer from ‘crowding out’.
Explain what this means and why...
asked 1 hour ago