What are phylogenetic trees?
What will be an ideal response?
diagrammatic representations of evolutionary relationships among organisms
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________ are the main primary producers in freshwater environments
A) Phototrophic microorganisms B) Heterotrophic microorganisms C) Chemolithotrophic microorganisms D) Viral microorganisms
Although an orphan, Ian is also Jewish. If both he and Sylvia were carriers, what would be their chances of having a Tay-Sach's child?
a. 3 out of 4 (75%) b. 2 out of 4 (50%) c. 1 out of 4 (25%) d. Not enough information is given to make this type of prediction.
Which group of terms is in the correct developmental sequence?
a. microspore mother cell, meiosis, megaspore, female gametophyte. b. microspore mother cell, meiosis, microspore, pollen grain. c. megaspore, mitosis, female gametophyte, meiosis, endosperm mother cell. d. all of the above.
Instances in which cells die shortly after they are produced in development is called:a
morphogenesis. b. type C determination. c. apoptosis. d. non-specific differentiation. e. caspases.