Cilia are different from flagella in that the cilia are
A. shorter and more numerous.
B. longer and more numerous.
C. shorter and less numerous.
D. larger and less numerous.
A. shorter and more numerous.
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Which of the following phrases is used to describe J. B. Lamarck's hypothesis of evolutionary change?
a. inheritance of ancestral identity b. inheritance of acquired characteristics c. natural selection d. survival of the fittest e. intelligent design
Most DNA-based phylogenetic analyses place humans and chimpanzees (including bonobos) as each other's closest relatives, but a persistent minority of studies place gorillas and chimpanzees as sharing a common ancestor that was not a human ancestor
The reason is incomplete lineage sorting, which simply means that ________. A) the ancestral species of all great apes was genetically variable at some loci, and each descendant species lost different random combinations of ancestral alleles B) the labs that sequenced great ape DNA made a simple procedural error C) mitochondrial genes can become unlinked and be inherited by independent assortment D) primate lineages are not completely reproductively isolated and can hybridize E) coding regions of the primate genome are more likely to give false results than noncoding regions such as SINEs
STR analysis is a DNA profiling technique that makes use of the fact that different people have ________
A) different numbers of repeats of short DNA sequences at certain sites in the genome B) different alleles for many genes in the genome C) different restriction fragments D) different CODIS DNA sequences
Answer the following questions true (T) or false (F)
1. The first anticodon on a tRNA that binds to an mRNA transcript is complementary to AUG. 2. During translation, one mRNA can be translated by many ribosomes at once. 3. tRNA and rRNA are not translated into proteins.