Explain how chordates reproduce
Explain how chordates reproduce?
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The reproduction in beings of phylum Chordata is sexual, with the exemption of urochordates which can as well reproduce asexually. In certain classes (that is, osteichthyes fishes, cyclostomes, and amphibians) there is larval phase. With rare exceptions, amphibians, fishes, reptiles and monotreme mammals are oviparous, egg-laying (that is, embryos develop in eggs and exterior to the mother’s body) and marsupial and placental mammals are viviparous (that is, embryos develop within the mother’s body, feeding from her).
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Describe the pre-dominating chemical compounds correspondingly in eggshell, white and yolk?
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This law at first increased the mandatory retirement age from 65 to 70 and then was later amended to eliminate an upper age limit altogether.
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