Which phylogeny is best supported by the DNA sequence simila…
Which phylogeny is best supported by the DNA sequence similarity data in the table below? birds crocodilians lepidosaurs (lizards) turtles mammals birds 100% crocodilians 85% 100% lepidosaurs (lizards) 73% 72% 100% turtles 71% 73% 92% 100% mammals 59% 57% 60% 59% 100% Hint: Compare all of the DNA similarities.
Read DetailsIn 2000, the artist Eduardo Kac unveiled his bio-engineered…
In 2000, the artist Eduardo Kac unveiled his bio-engineered art piece named “Alba,” a transgenic rabbit created using transformation. Alba’s cells carried a gene derived from jellyfish that produces GFP, a green fluorescent protein. When Alba was illuminated with UV light, she fluoresced a bright lime green color. To create Alba, genetic engineers had to first create a/an recombinant DNA vector that consisted of a rabbit [regulatory] gene and the jellyfish [coding] gene that produced GFP. This vector was then inserted into the genome of the embryo that ultimately developed into Alba.
Read DetailsTraditional genetic engineering methods like transformation…
Traditional genetic engineering methods like transformation lack the ability to target where genes are inserted into an organism’s genome. In contrast, the CRISPR-Cas9 system can precisely locate the gene in the genome to be edited. What component of the CRISPR-Cas9 system ensures it will only edit the target gene?
Read DetailsWhich phylogeny is best supported by the DNA sequence simila…
Which phylogeny is best supported by the DNA sequence similarity data in the table below? birds crocodilians lepidosaurs (lizards) turtles mammals birds 100% crocodilians 88% 100% lepidosaurs (lizards) 72% 71% 100% turtles 70% 72% 91% 100% mammals 60% 58% 60% 59% 100% Hint: Compare all of the DNA similarities.
Read DetailsThe “ABO” blood group in humans is characterized by a single…
The “ABO” blood group in humans is characterized by a single gene with three alleles: A, B, and O. A and B are co-dominant with each other, while O is recessive to both A and B. These allelic interactions give rise to four possible phenotypes: type A, B, O, or AB blood. Given the allelic interactions described above, some phenotypes can result from more than one genotype (e.g., the genotypes AO and AA both result in type A blood). Suppose a woman with type AB blood gives birth. After taking her child home from the hospital, she discovers the child has the following phenotype: type O blood. Given both the mother and child’s phenotypes, which of the following conclusions is correct?
Read DetailsDNA is built of nucleotides. There are four unique nucleotid…
DNA is built of nucleotides. There are four unique nucleotides found in DNA, cytosine (C), guanine (G), adenine (A), and thymine (T). What component of a nucleotide gives its unique characteristics and corresponds to its shortened name?
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