Children born with Down syndrome have inherited an extra chromosome, so their diploid number is 47 rather than 46 chromosomes. What is this genetic condition called?
A) haploid 21 B) trisomy 21 C) triploid D) monoploidy
Answer: B
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Conjugative transposons
A. can be transferred from one bacterium to another by a phage mediated process. B. often express enzymes that degrade aromatic compounds. C. may be involved in the spread of antibiotic resistance in bacteria. D. All of the choices are correct.
Protist cells that produce gametes for sexual reproduction are most specifically called ________.
Fill in the blank(s) with the appropriate word(s).
The ability of an infant organism to be able to keep track of the location of its mother is an example of:
a. classical conditioning b. habituation c. imprinting d. insight e. operant conditioning
A vasectomy is a form of male sterilization in which each vas deferens is cut, but most of the male's reproductive physiology remains intact. Which of the following will not continue to occur in a male who has had a vasectomy?
A) Sperm will be produced in the seminiferous tubules. B) Seminal fluid will be ejaculated from the penis during orgasm. C) Glandular secretions will be ejaculated from the penis during orgasm. D) Sperm will be ejaculated from the penis during orgasm.