Amniocentesis is preferred over chorionic villus sampling because recombinant DNA screening can be achieved with amniocentesis but not with chorionic villus sampling
Indicate whether the statement is true or false
FALSE
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The products of genes that are switched on in
specific tissues at specific stages of development affect mainly a. gene replication. b. gene transcription. c. mRNA transcript processing. d. translation. e. post-translational processing of proteins
The accumulation of which gas from fossil fuel burning significantly affects global temperatures?
a. carbon dioxide b. nitrogen c. oxygen d. ozone e. water
Which repair mechanism is an error-prone system that uses bypass polymerases to replicate short segments of daughter strands whose normal replication is blocked by lesions in template strand DNA?
What will be an ideal response?
A recent biology graduate was studying the evolution of a particular organism when she realized that she did not have enough data to determine the particular order of recent evolutionary events that formed her species. Given this information, how would you suggest she interpret her findings?
a. There must have been an increase in chromosome number in one of the species in her evolutionary tree. b. Perhaps there were several extinctions that confuse the order. c. It seems that her findings are the result of the process of adaptive radiation. d. A landscape change such as rising sea levels interrupted the evolutionary events occurring. e. The data indicate sympatric isolation.