In a 32-cell stage tunicate embryo, vegetal marginal cells that lack functional genes for both macho-1 and the FGF receptor would develop as what cell type?
A. Notochord
B. Muscle
C. Mesenchyme
D. Nerve cord
Answer: D
Biology & Microbiology
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A) deletion B) transition C) transversion D) insertion E) All are equally likely.
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Compare and contrast the packaging and composition of DNA in prokaryotes and eukaryotes
Does the large amount of DNA in eukaryotic cells directly reflect the number of genes in eukaryotic cells compared to prokaryotic cells or are there other factors involved? What will be an ideal response?
Biology & Microbiology
Which chordate trait evolved first?
A) Calcium-hardened skeleton B) Amniotic egg C) Four limbs D) Skull and backbone
Biology & Microbiology
What molecule would you not expect to find in a retrovirus?
a. Uracil b. Cytosine c. Guanine d. Thymine
Biology & Microbiology