i.) Each early hominin was alone in Africa, with little evidence
of other hominin species living...
i.) Each early hominin was alone in Africa, with little evidence
of other hominin species living nearby. True or Flase
ii) Bipedalism is an arboreal adaptation. True or Flase
Solutions
Expert Solution
1) True
Immediate ancestor of humans are the members of genus
astralopithecus .Both australopithecines and humans are
biologically similar enough to be classified as members of the same
biological tribe--the Hominin.
The earliest australopithecines very likely did not evolve
until 5 million years ago or shortly thereafter (during the
beginning of the Pliocene Epoch) in East Africa.
By 3 million years ago, they were common in both East and South
Africa. Some have been found dating to this period in North Central
Africa also.
However, African forests were progressively giving way to
sparse woodlands and dry grasslands, or savannas
2) True
Bipedalism is a form of terrestrial locomtion , where organism
move by means of two limbs or legs.
Arboreals are the animals which live in trees.
Recently discovered australopithecine limb bones may be
interpreted as indicating a primarily arboreal adaptation,
emphasizing brachiation, with bipedalism
1. Which is the earliest species of hominin to be found outside
of Africa?
2. List a couple features of "archaic" Homo sapiens, as compared
to Homo erectus
3. List a couple features of "archaic" Homo sapiens, as compared
to modern humans.
4. What two groups of people made an appearance around 150,000
years ago
I. A missionary couple, living in West Africa
bought their 4-year old son to the Emergency room as he had fever
and a pinkish rash has been developing on his hands and feet at
first then it spread to both arms and legs. There are no other
symptoms that the child feeling very fatigued.
1. This disease is most likely caused by what bacteria?
Name the disease.
2. How would epidemiology assist you in finding the
sources of this illness?...
The protein synthesis in pro- and eukaryotic species resembles
each other to a large degree. In both pro and eukaryotic cells,
mRNA is used as template for incorporation of the correct amino
acids in the growing polypeptide chain.
a) List the main differences between mRNA from prokaryotic and
eukaryotic species
b) In contrast to prokaryotic cells, eukaryotic cells has
spliceosomes, what function do they have? and list the main steps
in the reaction
c) How many different codons code for...
Two people are headed towards each other on skateboards and
experience very little friction or airresistance. One person has
massm1= 40 kg and one has mass m2= 80 kg. If they are going equal
velocities(v = 3 m/s)before the collision, which direction will
they be going afterward? How fast?What if we allow the lighter
person to start off on a hill of height h. What should h be so that
after the collision both skateboarders have stopped?
1) Two wires each of length I with current I are placed parallel
to each other separated by a distance d. What physical quantities
can you determine using this information? How will the values of
these quantities change if one of the currents is reversed? If one
of the currents is doubled? Include a diagram to explain your
reasoning.
2) An electric motor has a square armature with 500 turns. Each
side of the coil is 12 cm long and...
I. Evidence should be relevant and reliable to be
appropriate. Define the terms “Relevance” and
“Reliability”.
II. For each situation presented
below, indicate which means of gathering evidence would be
considered
more reliable (#1 or #2) AND indicate a reason
from the following list:
A. Independent source of the
information (Independence of provider);
B. auditor’s direct
knowledge;
C. Knowledgeable source
(qualifications of individual providing the information);
D. degree of objectivity
versus subjectivity; and
E. Functioning system of
internal controls.
DO NOT DISCUSS your...
State briefly how these distributional models are related to
each other.
i) the gamma (?, ?) and chi-square (n) models. Hence, deduce the
mean and variance of a chi-square model with n degrees of freedom.
using moment generating function of the gamma model, write the
moment generating function of the chi-square model.
ii) the Weibull model and Rayleigh model