Which of the following cell cycles is represented by birds?
A) Alternation of generations B) Haploid life cycle C) Diploid life cycle
C
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Your friend wants to know why birds such as boobies and birds of paradise have elaborate mating rituals. You explain that:
1.Behavioral rituals are a way to keep a bird from breeding with the wrong species, since the rituals are specific to each species. 2.Birds are social and need a way to attract a mate. 3.Birds have evolved mating rituals as methods to display their elaborate and beautiful plumage. 4.Mating rituals have evolved to keep males from mating with more than one female.
__________ are electrically excitable cells that signal other cells by means of chemical messages. Fill in the blank(s) with the appropriate word(s)
Human gonads have two functions: to produce gametes and to secrete hormones that are responsible for sexual development and mating behavior
1.True 2.False
Scientists were studying temperature selection among pregnant big brown bats. What would the treatment group be in this experiment?
What will be an ideal response?