How would you characterize the relationship of species that have many genetic similarities compared to those that do not?
What will be an ideal response?
Closely related to not closely related
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Meerkats are small desert mammals that live in groups of 20–50 animals. You observe a female meerkat who spends all of her time caring for the 1-year-old offspring of her sister (her nieces and nephews)
The aunt is capable of reproduction but has not reproduced. Which of the following would contribute to the evolution of this behavior pattern? A. The odds of any one female reproducing are completely random. B. Offspring require the efforts of a single adult (the mother) in order to be successful. C. Offspring require the efforts of at least two adults in order to be successful. D. Offspring are independent at the age of three months, with no adult care after that point.
Which of the following is the correct order of
the three lines of defense?
a. barriers that exclude pathogens>>adaptive immunity>>innate immunity b. barriers that exclude pathogens>>innate immunity>>adaptive immunity c. innate immunity>>adaptive immunity>>barriers that exclude pathogens d. apaptive immunity>>barriers that exclude pathogens>>innate immunity e. apative immunity>>innate immunity>>barriers that exclude pathogens
What discovery by T. H. Morgan finally determined that genes were carried on chromosomes?
A. the finding of complete dominance B. discovery of the Rh blood group C. sex-linked inheritance of eye color in fruit flies D. heat-sensitivity of certain enzymes determining coat color
Which of the following structures is a stem adaptation instead of a root adaptation?
A. tubers B. corms C. stolons D. rhizomes E. These are all are stem adaptations.