How does the telomerase attach to the telomere area on the chromosome?
a. It is assisted by specialized helper enzymes.
b. It has a built-in RNA template that binds to the end of the telomere.
c. Telomerase cannot bind to the telomere.
d. Primase builds an RNA primer to assist in binding telomerase to the telomere.
b. It has a built-in RNA template that binds to the end of the telomere.
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Damage to the collar would prevent the sponge from
A. secreting spongin to form the sponge body. B. circulating water through the sponge. C. producing gametes for sexual reproduction. D. extracting organic matter from the water.
What is the function of the HOTAIR ncRNA?
A. HOTAIR acts first as a scaffold, then as a guide B. HOTAIR acts as guide, then as a template. C. HOTAIR acts as a guide, then as a ribozyme. D. HOTAIR acts only as a guide.
Many male insects have specific structures (intromittent organs) that allow transfer of sperm internally to a female's reproductive tract
These structures have a specific morphology that only fits into a female's reproductive tract of the same species, and results in internal fertilization. Having the lock-and-key fit also provides a A. pre-zygotic isolating mechanism. B. post-zygotic isolating mechanism.
At the end of meiosis II, what is produced?
What will be an ideal response?