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Q. How do chordates reproduce?
Reproduction in beings of the phylum Chordata is sexual, with the exception of urochordates that can be also reproduce asexually. In some classes (cyclostomes, amphibians and osteichthyes fishes) there is larval stage. With rare exceptions, amphibians, fishes, monotreme and reptiles mammals are oviparous, egg-laying (embryos develop outside the mother's body and within eggs) and marsupial and placental mammals are viviparous (embryos develop inside the mother's body, feeding from her).
Phenology of Different Species The phenology of different species present in a community may differ from each other significantly. It is these phenological changes which give
1. The genes for ruby eyes (rb), tan body (t) and cut wings (ct) are all found on the X-chromosome of Drosophila melanogaster. All of these are recessive traits. They map in the or
What is the Industrial Melanism in evolution? A classic example of Darwin's theory at work in an actual real-life situation lies in the case of the peppered moth during the ind
Define the Peripheral Nervous System (PNS) Peripheral nervous system consists of cranial and spinal nerves. There are twelve pairs of cranial nerves. They arise from brain.
How many cells are in the average human brain? Roughly, 6 trillion are in the average human brain.
Q. Compared to platyhelminthes which physiological problems have the cylindrical body of nematodes brought? How was that problem solved? The cylindrical shape of nematodes made
classification of coelenterats?
Define observation or inference for barfoed test? 1. Reddish brown precipitate is seen on the sides and bottom of the tube. The precipitate of the sides and bottom indicates th
Sex-Limited Traits Sex Limited Traits are traits expressed only in one sex, although the genes controlling thcm arc prcscnt as wcll as transmitted to both thc sexes. Therefore,
Besides the pancreatic juice in the intestine there is the releasing of the enteric juice that having digestive enzymes too. What are these enzymes and which type of molecule does
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