One might expect that there would be a correlation between genome size and the complexity of an organism
However, some amphibia have genomes 10× the size of the human genome and even closely related species within phyla can have genome sizes that vary by orders of magnitude (e.g., flowering plants and amphibia). Give possible reasons for this variation.
What will be an ideal response?
Ans: Genomes have significant amounts of DNA that are not involved in encoding polypeptides, including introns, intergenic regions, and repetitive DNA, mostly from transposons (sequences that randomly move from site to site in genomes). Additionally, some members of a phylum have genomes that have undergone a duplication event during evolution.
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The complex of DNA, RNA, and associated proteins that gives shape to the chromosome is called ____
Fill in the blank with the appropriate word.
Sea turtle populations are threatened with extinction by natural dangers, and humans increase that threat because sea turtles
A) are spreading into coral reefs. B) are difficult prey for human poachers to capture. C) are caught in nets along with other species being fished. D) are overexploited as pets. E) are overexploited for research and development.
which is false of adolescent sleep?
What will be an ideal response?
Which of the following organisms would most likely produce asexually?
A. a fish in a tidal zone B. a haploid lizard C. a mammal D. a queen honeybee E. None of these organisms could produce asexually.