One possible explanation for why ____________________ is a primary risk factor for autosomal trisomy is that
oocytes remain in meiosis I until ovulation, which could take place many years after birth, making them more susceptible
to damage.Fill in the blank(s) with the appropriate word(s).
maternal age
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Communication between cells of the immune system is accomplished in many cases through
A) allelic exclusion. B) clonal deletion. C) cytokines. D) allelic exclusion, clonal deletion, and cytokines.
Explain why a potentially rabid dog is held for up to two weeks to check for clinical signs of rabies. Are humans more similar or dissimilar in this regard?
What will be an ideal response?
________ prevent the backflow of blood in veins
Fill in the blank(s) with correct word
The ________ from Agrobacterium tumefaciens is used in genetic engineering involving crop plant genes.
A. Ti plasmid B. DNA C. Ti vector D. restriction endonucleases