Asexual reproduction in plants results in:
A. increased genetic diversity.
B. offspring that are genetically different from
the parent(s).
C. offspring that are genetically different from
each other.
D. offspring that are genetically identical to
the parent.
E. no production of offspring.
D
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Use the following information and figure to answer the question below
In a review paper published in 2000, Adoutte et al. examined some animal phylogenies generated by comparing the ribosomal RNA (rRNA) of animals from many different phyla. They then integrated these independently created phylogenies into one phylogeny that best fit all the data. The figure below compares a traditional phylogeny based on morphological characteristics (A) to the new molecular-based phylogeny described by Adoutte et al. (B). Note that platyhelminthes, nemerteans, and entoprocts, which do not have coeloms and are classified as acoelomates in the morphological phylogeny, are reclassified as lophotrochozoans in the molecular phylogeny. Similarly, groups classified as pseudocoelomates in the morphological phylogeny are reclassified as either lophotrochozoans or ecdysozoans in the molecular phylogeny; other lophotrochozoans and ecdysozoans have coeloms. Copyright 2000 National Academy of Sciences, U.S.A. (A. Adoutte, G. Balavoine, N. Lartillot, O. Lespinet, B. Prud'homme, and R. de Rosa. 2000. The new animal phylogeny. Proceedings of the National Academy of Sciences USA 97(9):4453-56.) What does this reclassification based on molecular data imply about the evolution of acoelomates, pseudocoelomates, and coelomates? A) Pseudocoelomates can be seen as an intermediate stage between acoelomate and coelomate development. B) Although acoelomates and pseudocoelomates evolved only once, coelomates evolved multiple times in different lineages. C) Only the animals that evolved earliest are acoelomates. D) Some pseudocoelomates and acoelomates have evolved from coelomates.
The most economically useful unicellular fungi are
A. basidiomycetes. B. actinomycetes. C. yeasts. D. mushrooms.
The risk of heart attacks and stroke can be reduced by avoiding conditions that damage the blood vessel endothelium
Indicate whether the statement is true or false.
Identical twins have identical ____, but they do not always have identical ____
a. mitochondrial DNA; genotypes b. genotypes; mitochondrial DNA c. genotypes; phenotypes d. phenotypes; genotypes e. phenotypes; mitochondrial DNA