Weedy plants are characterized by all of the following except
a. rapid growth.
b. limited seed production.
c. great genetic variability.
d. the ability to inhabit a variety of habitats.
e. asexual reproduction via root spread.
B
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Organisms that typically produce colonies with a fried egg appearance are the
A. Mycoplasma. B. Actinomyces. C. Chlamydia. D. Mycobacteria.
If mutagenizing a number of Drosophila results in several observable phenotypes but also in several lethal mutations, does this mean that recessive lethal mutations cannot be studied further?
A) No—the lethal allele can be recovered from heterozygous siblings. B) No—the lethal allele can be sequenced from the other embryos. C) Yes—lethal alleles can be studied only if they are recessive. D) Yes—lethal alleles can be studied only if they are conditional. E) Yes—unless the lethal allele can be supplemented with a missing gene product.
Single-stranded miRNA targets the RISC complex to specific mRNA targets that contain sequences complementary to the miRNA
A. true B. false
Which of the following statements is true about the phylogenetic tree shown here?
A. The gibbon is more closely related to the rhesus monkey than to the chimpanzee. B. The galago is more closely related to the green monkey than to the capuchin. C. The green monkey and rhesus monkey share a common ancestor with the gibbon and chimpanzee. D. The gibbon does not share a common ancestor with the chimpanzee or human. E. The green monkey and rhesus monkey share a more recent common ancestor than do the chimpanzee and human.