An examination of the processes of muscle contraction in fishes is an example of
a. an ecological study.
b. a taxonomic study.
c. an anatomical study.
d. a physiological study.
e. a homeostatic study.
D
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The mutation or deletion of Hox genes in fruit flies causes:
A. embryonic lethality. B. appearance of abnormal body appendages. C. appearance of normal body appendages at inappropriate body positions. D. None of the choices is correct.
If meiosis did not occur in sexually reproducing organisms
1.growth of the zygote would be halted. 2.mitosis would be sufficient. 3.gametes would be haploid. 4.the chromosome number would double in each generation. 5.eggs would be haploid, but sperm would be diploid.
An ancestor and all of its descendants are known as a monophyletic group or a(n) ________
A) apomorphy B) plesiomorphy C) synapomorphy D) clade
Carbohydrate chains are attached to some of the lipids and proteins in the membrane. These are:
What will be an ideal response?