BIOL-1033 EXAM 4|| LATELY UPDATED QUESTIONS
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The human blood type AB in which both the A antigen and the B antigen are
found embedded in the blood cells is an example of - (answers)Codominance
An X-linked gene is - (answers)a gene on the X chromosome
A man and a woman are both heterozygous carriers for the recessive allele that
causes cystic fibrosis. What is the probability that they will have an offspring who
has cystic fibrosis? - (answers)25%
All the offspring of a cross between a red-flowered plant and a white flowered
plant have pink flowers. This means that the allele for red flowers is _______ to
the allele for white flowers. - (answers)incompletely dominant
The origin of mitochondria in a eukaryotic cell is explained by -
(answers)Endosymbiosis of an aerobic bacterium
Which would be most likely to be fossilized? - (answers)a common thick-shelled
crustacean
You uncovered a fossil that you suspect is around 100 million years old. Which of
the radioisotope pairs in the table could you eliminate as an appropriate choice
, 2
for radioisotope dating the accompanying rock? - (answers)Carbon-14/Nitrogen-
14
The Earth's atmosphere has changed a lot over the past 4 billion years. One big
change was due to photosynthetic organisms. Their photosynthesis increased the
amount of what atmospheric gas? - (answers)Oxygen (O2)
The first living cells were most likely - (answers)Anaerobic prokaryotes
The process by which the major land masses have shifted their positions, changed
shapes and separated from each other, is known as - (answers)Continental drift
(plate tectonics)
The likelihood of allopatric speciation increases when a splinter population is
__________ and __________ the broader range of the species. - (answers)Small ;
isolated from
Today there are 54 different honeycreepers in Hawaii. The ancestor of the
honeycreepers was the European rosefinch. The evolution of many species of
honeycreeper is the result of - (answers)Adaptive radiation
During the Beagle journey, Darwin visited islands, allowing him to compare island
species with continental species. In terms of framing his theory of evolution, why
was this significant? - (answers)Because the island species had both similarities to
their continental ancestors and unique adaptations to their island environments.