A variation of the PGD method, called ____________________, can test for genetic disorders in the egg before fertilization
Fill in the blank(s) with correct word
polar body biopsy
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The microsporidian Brachiola gambiae parasitizes the mosquito Anopheles gambiae
Adult female mosquitoes must take blood meals for their eggs to develop, and it is while they take blood that they transmit malarial parasites to humans. Male mosquitoes drink flower nectar. If humans are to safely and effectively use Brachiola gambiae as a biological control to reduce human deaths from malaria, then how many of the following statements should be true? 1. Brachiola should kill the mosquitoes before the malarial parasite they carry reaches maturity. 2. The microsporidian should not be harmful to other insects. 3. Microsporidians should infect mosquito larvae, rather than mosquito adults. 4. The subsequent decline in anopheline mosquitoes should not significantly disrupt human food resources or other food webs. 5. Brachiola must be harmful to male mosquitoes, but not to female mosquitoes. A) 2 and 5 B) 1, 2 and 4 C) 1, 2, and 4 D) 2, 3, 5 E) 3 and 4
Which feature of life is the ability to maintain a stable internal state?
a. energy production b. sensing the outside world c. reproduction d. homeostasis e. growth
Define operons as they occur in bacterial cells. What will be an ideal response?
Which of the following statements is true regarding the use of oligonucleotide primers in PCR?
A. Oligonucleotide primers must hybridize completely to the template DNA strand in order for PCR to proceed; nonhybridized DNA will be degraded. B. The use of oligonucleotide primers is obsolete with the Gibson method of seamless cloning; instead, DNA polymerase and DNA ligase are able to copy the DNA independently. C. Oligonucleotide primers must hybridize to the 5' end of the template strand leaving a 3' primer "overhang"; that sequence will be copied and incorporated into the daughter strands allowing seamless cloning to occur. D. Only a portion of the oligonucleotide primers need to hybridize to the 3' template DNA strand; the 5' "overhang" can contain a restriction site that will be copied during the second and all subsequent cycles of PCR.