How many of the following statements concerning the loss of hind limbs during whale evolution are true? 1. it is well documented by a series of transitional fossils. 2. it explains why modern whales have vestigial pelvic girdles. 3. it involved changes in the sequence or expression of hox genes. 4. it is an example of macroevolution. 5. it, and the loss of limbs by snakes, are an example of similar adaptations to a similar environment. a) only one statement is true. b) two statements are true. c) three statements are true. d) four statements are true. e) all five statements are true.

D) Four statements are true.

Explanation:

True statements are:

1. It is well documented by a series of transitional fossils.

2. It explains why modern whales have vestigial pelvic girdles.

3.It involved changes in the sequence or expression of Hox genes.

4. It is an example of macroevolution.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation: