Which of the following is not involved in vasodilation or vasoconstriction?
a. hot or cold temperatures
b. hormones
c. oxygen supply
d. nitric oxide
e. angiotensin
E
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Which population dispersion is the most common in nature?
a. random b. clumped c. uniform d. dynamic e. unpredictable
What does the data analysis allow you to conclude about linkage between sn and car? (Select all that apply.)
In Drosophila, singed bristles (sn) and carnation eyes (car) are both caused by recessive X-linked alleles. The wild-type alleles (sn+ and car+) are responsible for straight bristles and red eyes, respectively. A sn car female is mated to a sn+car+ male and the F1 progeny are interbred. The F2 are distributed as follows:
A) There is a high probability that the deviations from the expected number of F2 in each genotype class are due to chance.
B) The data do not allow rejection of the null hypothesis.
C) The p value is high meaning that the data is significant.
D) There is good evidence that cn and car are linked.
The ________ of a virion determines the type of cell it enters
A) nucleic acid B) matrix proteins C) glycoproteins D) lipid molecules E) shape
In sticklebacks, females prefer to mate with males that have higher red color intensity. Why is the figure below consistent with runaway sexual selection as an evolutionary mechanism for the evolution of this preference?
a. Environmental factors cause brothers and sisters to have corresponding degrees of preference and intensity. b. Male trait and female preference are genetically correlated. c. Male trait and female preference are caused by the same genetic locus. d. The data shown in the figure are not consistent as they are far too noisy. e. B and C.