Because the bones thought to belong to the Romanov family were highly decayed, what type of analysis was used by scientists to determine the gender of each deceased individual?
A) pelvic bone analysis only
B) DNA analysis of material that is specific to the Y chromosome
C) DNA analysis of material that is specific to the X chromosome
D) both pelvic bone analysis and DNA analysis
B
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Which of the following scientists discovered penicillin?
A) Alexander Fleming B) Paul Ehrlich C) Selman Waksman D) Sir Howard Walter Florey
When two genes are located on different chromosomes, ____ of the offspring from a testcross for
genetic linkage should have a recombinant phenotype.
a. over 75% b. about 50% c. about 25% d. about 10% e. about 5%
Octopuses and squids are cephalopods and are members of which group?
A. echinoderms B. arthropods C. amphibians D. cnidarians E. mollusks
Too much exercise and not enough recovery time is referred to as:
What will be an ideal response?