The Homo erectus skeleton of Nariokotome, Kenya, was found by
A) F. Clark Howell
B) Louis Leakey
C) Richard Leakey
D) Donald Johanson
E) Kamoya Kimeu
Question 2
Which of the following statements best describes the evolutionary model presented by C. Darwin in On the Origin of Species?
A) organisms generally practice reproductive restraint. This allows all members of a species to be uniform in their traits. Changes in species (evolution) may be attributed to periodic divine intervention.
B) the members of any species vary among themselves and may be viewed as in competition with one another. Individuals possessing adaptive traits (one that aid in this competition) will survive and reproduce. Over time, the adaptive traits will spread within the species.
C) two or more physical types exist within species, one of which will ultimately prove to be fittest.
D) organisms generally produce fewer offspring then the environment can support. Evolution then acts to increase the reproductive success of all members of a species equally.
E) within every population there is competition. Those animals that refrain from competing will have greater rates of survival and reproduction than more aggressive individuals.
Reconstruction of the female's head (homo floresiensis)
The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera.
Kiwi Bird Skeleton
Racial Shifts in St. Louis during the 1950s
Types of supercoiling found in chromosomes
Ribonucleotides containing unusual nitrogenous bases are found in transfer RNA