The production of female gametes begins when a mass of tissue, called the ovule, starts growing on the inner wall of
a(n) __________. Fill in the blank(s) with the appropriate word(s).
ANSWER: ovary
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You are given an embryo with eight cells and you carefully separate them and allow them to develop in separate containers. Each of the cells forms a complete embryo that develops normally into an adult animal. How would you categorize your animal?
A. It has indeterminate cleavage. B. It has determinate cleavage. C. It is a protostome. D. It is an annelid, mollusk, or arthropod. E. It has spiral cleavage.
Which pair of traits is homologous?
a. butterfly wings and bat wings b. the surfaces of bird and bat wings c. the skeletons of bird and bat wings d. butterfly wings and bird wings e. bird wings and bat wings
Which of the following is NOT true of asexual
reproduction? a. It is more suitable for reproduction in animals in stable environments. b. It results in offspring that are identical to each other. c. It promotes genetic variation in successive generations. d. Fission is a type of asexual reproduction. e. The offspring are essentially genetically identical to the parents.
The basic structure of a virus consists of:
a. Genetic information in the form of DNA. b. Genetic information in the form of DNA, a protein coat, and polymerase to replicate its DNA. c. Genetic information in the form of DNA or RNA enclosed within a protein coat, along with a few enzymes. d. Genetic information in the form of RNA, a protein coat, and reverse transcriptase in order to turn its RNA into DNA. e. Genetic information in the form of DNA or RNA enclosed within a protein coat.