What is the nuclei from differentiated mammalian cells can retain their full genetic potential?
100
A population that rapidly grows far away from Earth is prone to certain genetic diseases and their gene pool is quite different from those on Earth. This is an example of this phenomena.
What is the founder effect?
100
This type of connective tissue has a matrix called plasma that consists of water, salts, and dissolved proteins
What is blood?
100
This part of a neuron is called a soma
What is the cell body containing the nucleus?
100
In the digestive system, most nutrient absorption occurs in this
What is the small intestine?
200
Lyell's book Principles of Geology argued in favor of which of the following concepts?
What is that the Earth's surface is shaped by natural forces that act gradually over time and are still acting?
200
This type of reproductive barrier separates a pair of species that could interbreed except that one mates at dusk and the other at dawn.
What is temporal isolation?
200
This type of reproductive barriers separates two species of sea cucumbers, whose sperm & egg often bump into each other but don't fertilize because of incompatible proteins on their surfaces?
What is gametic isolation?
200
Male-attracting features such as the bright plumage of a male peacock result from this
What is inTERsexual selection?
200
Oxygen moves from the alveoli of the lungs into the capillaries by this
What is by diffusion? (High concentration to low concentration)
300
The fact that humans share certain traits with salamanders, such as having four limbs and a similar skeletal structure, yet are so different, are examples of this
What is homology?
300
Natural selection doesn't eliminate the sickle-cell allele in homozygotes because of this
What is populations where endemic malaria is present, heterozygotes have an important advantage: They are resistant to malaria & are more likely to survive & produce offspring that carry the allele?
300
A rabbit population consists of animals that either very dark on top or very light on top. No rabbit shows intermediate coloration. This pattern results from this
What is disruptive selection?
300
Most animals, including humans, are these kind of feeders
What are bulk feeders?
300
Veins bring blood _____
What is TO the heart?
400
Microevolution occurs when this happens
What is a population's allele frequencies change over a span of generations?
400
The average antler size remains constant over generations, although a few have slightly bigger or smaller antlers. This accounts for this situation.
What is the stabilizing selection effect?
400
Uplift & formation of a mountain range divides a species into two isolated populations. The formation erodes and the species are together again but produce sterile young. This is an example of this
What is allopatric speciation?
400
Two species that occasionally mate & produce zygotes, but which have incompatible genes that prevent the resulting embryo from developing, are separated by this
What is reduced hybrid viability?
400
The plasma protein involved in blood clotting is this
What is Fibrinogen?
500
Genetic drift resulting from a disaster that drastically reduces polulation size is called this
What is the bottleneck effect?
500
The emergence of a new plant species over a brief period of time, followed by a long period of little change, is consistent with this theory
What is punctuated equilibrium?
500
Large antlers in elk, which are used for battles between males, are a good example of this
What is inTRAsexual selection?
500
Smooth muscle propels food through the alimentary canal by a process called this
What is peristalsis?
500
This substance, produced by virus-infecting cells, signals neighboring cells that there is a virus and that they should begin to make anti-viral proteins