What are the disadvantages of using polyclonal antibodies?

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#Question id: 10889

#SCPH06 I Botany

Which of the following ecosystem that is lower Productivity/Biomass ratios and energy transfer rates to higher trophic levels are slower 

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#Question id: 16132

#SCPH06 I Botany

You are running a human assisted reproduction clinic and providing state-of-the-art genetic diagnostic services. A married couple who already had a child with cystic fibrosis approach you because they wish to have another child, but only if they can be assured that the child will not have cystic fibrosis. You genotype the woman and discover that she is a heterozygote for Del508, the most common mutation causing cystic fibrosis. You suggest that the couple consider first polar body testing, in which several unfertilized oocytes (each with its first polar body) are retrieved from the woman, the first polar bodies are removed, and PCR tests are conducted on DNA from each of the first polar bodies. The couple agrees, and you obtain the following results:

 

the observation that the polar bodies for oocytes #1 and #5 test positive for both Del508 and the wild type sequence, because

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#Question id: 5085

#SCPH01 Biochemistry

An embryo with meroblastic cleavage, extraembryonic membranes, and a primitive streak must be that of ________.

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#Question id: 1117

#SCPH06 I Botany

At puberty, an adolescent female body changes in both structure and function of several organ systems, primarily under the influence of changing concentrations of estrogen and other steroid hormones. How can one hormone, such as estrogen, mediate so many effects?

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#Question id: 103

#I Life Science/ Life Sciences Group – I-V

Lipids may be either hydrophobic or ________.