Recombinant chromatids have a mix of paternal and maternal alleles due to Select one:
a. crossing over having happened between the linked genes.
b. independent assortment.
c. persistent linkage of genes on the chromatid.
d. point mutations and gene aberrations from replication.
e. random fertilization of the gametes.
a. crossing over having happened between the linked genes.
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A stop codon
A. codes for the stop amino acid s-methyl-methionine. B. forms a hairpin loop forcing the ribosome to fall off. C. codes for no amino acid. D. enhances the binding of the e-polymerase. E. codes for the stop amino acid s-methyl-methionine AND forms a hairpin loop forcing the ribosome to fall off.
Why is ubiquitin nicknamed the "doom tag"?
a. When ubiquitin binds to a target protein, the ubiquitin enzyme degrades the protein and destroys it. b. When ubiquitin binds to a target protein, the complex is sent to the proteasome and the complex is hydrolyzed to amino acids. c. If a cell is deficient in ubiquitin, the cell will die. d. High levels of ubiquitin in a cell cause the cell to destroy vital proteins, leading to premature cell death. e. Ubiquitin catalyzes the conversion of pepsinogen to active pepsin, an enzyme vital to protein digestion in the stomach of mammals. A lack of ubiquitin in the stomach causes an organism to starve.
All EXCEPT which of the following are
disadvantages to sociality? a. predator avoidance b. cannibalism c. competition for food d. contagious diseases e. parasite infestation
The fertilization envelope forms during the acrosomal reaction Indicate whether the statement is true or false