Of the following four islands at the same
latitude, the one possessing the fewest species
is
a. 1,000 square kilometers in area and 300 km
from the mainland.
b. 3,000 square kilometers in area and 100 km
from the mainland.
c. 100 square kilometers in area and 3,000 km
from the mainland.
d. 300 square kilometers in area and 1,000 km
from the mainland.
e. none of these
C
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Which of the following is NOT one of Mendel's hypotheses to explain the results of his P, F1 and F2
crosses?
a. Adult plants carry a pair of genes that will determine the inheritance of each allele. b. If an adult plant has two different alleles, one is dominant over the other. c. Adult plants always have traits that are governed by a single pair of alleles, but the number of possible alleles varies with each trait. d. The pairs of alleles separate in the formation of gametes so that each gamete gets one allele of the pair. e. If an adult plant has two different alleles, one is recessive to the other.
A chromosome inherited from the male parent is called the
1.sex chromosome. 2.homologous chromosome. 3.sister chromatid. 4.paternal chromosome. 5.maternal chromosome.
The above figure represents the research of which of
the following researchers? a. Max Delbrück b. Alfred Hershey c. Martha Chase d. Salvador Luria e. Both Alfred Hershey and Martha Chase
The first and second lines of defense respond to invading microbes by (specific/nonspecific) mechanisms
What will be an ideal response?