Answer:
All animals went through 23 Carnegie stages
All the animals are vertebrates
Explanation:
The lines of all reached the end of 23.
Carnegie stages are used only for vertebrate embryos,
Hi!
Could you please be more specific, so that I can answer your question properly? Layer of what?
Answer:
All errors described will result in a negative result
Explanation:
The enzyme-linked immunosorbent assay (ELISA), is a test used to detect and measure antibodies, antigens and proteins in the blood. An ELISA test uses antibodies and/or antigens that are coupled to an easily-assayed enzyme, thereby this approach combines antibody specificity with the sensitivity of simple enzyme assays. ELISA test involves an antibody or antigen that reacts to form an antigen-antibody complex, where such reaction is interpreted as a positive result. The negative results are evidenced by the lack of reaction, which may be caused by some error during the chain of reactions in the ELISA test: antigen >> primary antibody (reaction) >> functional secondary antibody (reaction) >> conjugated enzyme (reaction) >> functional substrate.
Answer:
The answers are: NUCLEIC ACID, TRANSCRIPTION, TRANSLATION, DNA, AND MRNA.
Explanation:
A promoter and a start codon are similar in that both are sequences of____NUCLEIC ACID______ that are required to start important processes, and both determine the sites where the process will begin. The key differences are that the promoter is needed to start__TRANSCRIPTION___and the start codon is needed to start____TRANSLATION____. Also, the promoter is a___DNA _____ sequence only, and the start codon is a sequence found within a(n)___MRNA.____.