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Q. What are the six criteria used to build a complete evolutionary branch of vertebrates?
Dichotomy in each of the six following criteria builds the vertebrate evolutionary branch: absence of mandibles separates cyclostomes from others absence of limbs separates fishes from the remaining absence of osseous skeleton separates chondrichthian (cartilaginous) fishes from osteichthyes absence of impermeable skin separates amphibians from the terrestrial vertebrates absence of warm blood (homeothermic body) separates reptiles from birds and mammals absence of mammary glands and hair separates birds from mammals.
Growth and Development of Plants You must have seen beautiful plants growing in pots in a garden. The plant grows while the pot does not. As a rule living things grow, but non
Explain the Virtual Dissection of the Rat in multimedia tutorials? This animation will teach you about basic mammalian anatomy. The major organ systems in a rat are very simila
Advantage of solar energy: 1. It is renewable: it produce comes from sun, so it is plentiful and will always be there as long we need it . 2. Solar
Functions of Synergids Ultra structurally the structure and concentration of cell organelles reveals that synergids are metabolically active. The following Wee functions are a
CUTIN It is a lipid formed by polymerization and cross-esterification of hydroxy fatty acids. Cutin occurs inside outer epidermal walls of plant surfaces as bringing agent t
Explain the Parts of the Microscope? Microscope, as you may have noticed in Figure or for that matter even seen in a laboratory, is a metal body composed of a base and an arm t
Inter-relationships of Classification The aim of classification is to put together organisms on the basis of their similarities. But the question is what type of similarities?
Oxygen Dissociation Curves The oxygen content of blood fully saturated or oxygenated can be calculated. It is known as the oxygen capacity of blood and this varies for differe
which was the first harmone discovered#
Sally Subcloner wants to clone a fragment into pUC19 (Map above - From New England Biolabs). Her fragment was a protein coding gene of 2.7 kb, and had Xho I sites on either end (a
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