Why is mRNA a good intermediate for translation?
What will be an ideal response?
mRNA is a good intermediate because it must leave the nucleus and go to the
cytoplasm to direct translation. DNA is the genetic code and cannot leave the nucleus and risk
degradation. So, mRNA can carry the DNA information to the cytoplasm without causing any
risk of harm to the original DNA molecule.
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What biosafety level is required when working with Staphylococcus aureus and Streptococcus pyogenes?
A. 3 B. 1 C. 2 D. 4
Crossing over is an event associated with mitosis
a. Yes b. No
In radishes, two incompletely dominant genes control color and shape. Red and white radishes are
homozygous, whereas the hybrid is purple. Long and round are homozygous and, if crossed, will produce an oval hybrid. Give the F2 genotypic and phenotypic ratio produced by crossing pure-breed red long radishes with white round varieties. What will be an ideal response?
Which is a correct description of hormone action?
A. Testosterone stimulates corpus luteum. B. LH stimulates Sertoli cells in the testes. C. GnRH stimulates the anterior pituitary gland. D. Testosterone regulates LH and FSH in a positive feedback loop. E. FSH stimulates Leydig cells in the testes.