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Which of the following statements least accurately explains our knowledge of how gene number relates to "organismal complexity"?
A. Based on known gene numbers there appears to be an upper limit of approximately 30,000 genes in the many complex genomes.
B. Phenotypic "simplicity" and "complexity" are accurate predictors of gene numbers.
C. The number of genes within the genomes of lower model organisms like the fruit fly and nematode are not orders of magnitude lower than higher animals like mice and humans
D. The difference in gene numbers among plants and animals is minimal.
How different are fecundation in osteichthyes and in chondrichthyes? In chondrichthyes fecundation is internal by means of copulation. In osteichthyes fecundation generally is
The PCR (polymerase chain reaction) is an extremely simple as immensely powerful methods. It permits enormous amplification of any particular sequence of DNA
REASON S FOR GROWTH OF POPULATION - The human population explosion is mainly a result of reduced death rate. Main reasons for it are - 1 . Protection from natura
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Q. Do echinoderms have an excretory system? How is excretion done in these animals? Echinoderms do not have an excretory system their excretions are eliminated by diffusion.
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Glands A cell, tissue or organ which secretes specific chemical secretion is known as a gland. The glands develop from the epithelium tissues. The glands are classifi
HOW SHOULD I PREPARE AN INVESTIGATORY REPORT ON CONNECTING LINKS AS AN EVIDENCE OF EVOLUTION
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