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How do birds reproduce?
Birds, like each vertebrate, have sexual reproduction. Their embryos develop within shelled eggs having extraembryonic membranes and outside the mother's body.
Birds copulate. Fecundation is internal and it happens only before the female gamete is included by the calcareous eggshell.
What are the situations in which the environment can alter the genotype of an individual? What is the condition for this type of change to be transmitted to the offspring? The
What is the mathematical expression of the genetic equilibrium for genes with two alleles? Is this statistical distribution the same as the statistical distribution of the respecti
Define The Names of Some Immemorial Plants? From the time immemorial plants have been known by some name, they are common, vernacular or local names given by different persons.
Explain the Use and Care of Microscope? Proper care and maintenance of microscope is needed. Following points should be kept in mind while handling the microscope: (i) Instr
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predatory birds poisoned by insecticide
Meroblastic or partial cleavage The egg does not divide totally because divisions are restricted to only a part of the egg where as the rest of the egg remains completely uncl
Which of the following statements regarding the separation of DNA fragments using gel electrophoresis is false? A. DNA fragments will migrate towards the positively charged ele
Tlie phylum Cnidaria or Coelenterata, includes the faliiiliar hydras, jelly fishes, sea anemones and corals. You have olreacly studied about Cnidarialis in Units 4 and 7 of LSE-09
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