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#Question id: 22952
#SCPH06 I Botany
Many of the genes that determine floral organ identity are MADS box genes, Except
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#Question id: 4744
#SCPH12 I Genetics
Assume that long ear lobes in humans are an autosomal dominant trait that exhibits 50% penetrance. A person who is heterozygous for long ear lobes mates with a person who is homozygous for normal ear lobes. What is the probability that their first child will have long ear lobes.
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#Question id: 702
#SCPH05 I Biotechnology
Proteins often have regions that show specific, coherent patterns of folding or function. These regions are called:
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#Question id: 15621
#SCPH01 Biochemistry
Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition Lac– strain, called lac3–, is linked to the Tn5 insertion. From a strain carrying the Tn5 insertion and lac3– mutation you isolate an F’ that caries a region of the chromosome that includes both Tn5 and the linked Lac region. Introduce this F’ into an F– strain carrying lac1– by selecting for Kanr. These merodiploids express ß-galactosidase normally. If the merodiploid were Lac–,
a) the two mutations lie in the different gene.
b) Both mutation are complement each other
c) the two mutations lie in the same gene.
d) Both of the mutations is dominant to wild type.
what could you conclude about the relationship between the lac3– and lac1– mutations from these statements?
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#Question id: 1286
#SCPH06 I Botany
Syndecans are cell-surface proteoglycans that:
a. bind to collagens.
b. bind to multi-adhesive matrix proteins.
c. anchor cells to the extracellular matrix.