The following are all similarities between sirenians and whales except:
a. streamlined, practically hairless bodies.
b. forelimbs modified to form flippers.
c. tail flukes.
d. diet of macrophytes.
D
You might also like to view...
Imagine you are comparing the nutrient content of phloem sap from two plants: one with mycorrhizae and one without mycorrhizae. How would you expect the nutrient content of these two phloem samples to differ?
A. Phloem sap from the mycorrhizae sample will have more phosphorus. B. Phloem sap from the non-mycorrhizae sample will have more phosphorus. C. Phloem sap from the mycorrhizae sample will have less phosphorus. D. The amount of phosphorus will be the same in both samples.
Which of the following colonize the vagina during childbearing years?
A. Streptococci B. Clostridium C. Lactobacilli D. Enterobacter E. Clostridium AND lactobacilli
Drosophila mutations such as bcd, if homozygous in the mother, produce offspring with lethal defects, no matter what the genotype of the offspring. For some other genes, the mutant phenotype can be "rescued" by introducing a wild-type allele
What is the reason for these different outcomes? A) Non-rescuable mutations are of paternal origin. B) Rescuable mutations act as dominants. C) bcd is a maternal effect mutation. D) Rescue requires recombination between the maternal and introduced alleles. E) bcd is a Hox gene.
A ________ group consists of the most recent common ancestor and all of its descendants.
Fill in the blank(s) with the appropriate word(s).