Of the nearly 150 species in the genus Streptomyces, only S. somaliensis is known to be pathogenic in humans.
Answer the following statement true (T) or false (F)
True
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Answer the following statements true (T) or false (F)
1. Molecular homologies indicate that living species evolved from a common ancestor or interrelated group of common ancestors. 2. Microevolution would be reflected in disequilibrium in Hardy-Weinberg. 3. In red-wing blackbirds, females tend to choose males with the most desirable territories. Males compete for territories. This is an example of intersexual selection combined with intrasexual selection. 4. Sickle-cell anemia is a disease that occurred from a point mutation in the replication of DNA. That mutation causes a change of an amino acid in ?-globulin. Nonrandom mating (not mating with any individual that has the allele for the mutation) could result in the removal of the mutated allele from a population. This would be an example of natural selection. 5. Neutral variation is supported by the observation that most changes in codons occur in the third position within the codon, which often has no effect on the sequence of amino acids in the protein.
When newborn coastal garter snakes and newborn inland garter snakes are exposed to banana slug
chemicals, the coastal snakes responded by ____ while the inland snakes ____.
a. attacking; fled b. tongue-flicking; did not tongue-flick c. feeding; did not feed d. avoiding the stimuli; tongue-flicked e. ignoring the stimuli; performed threat displays
Which of the following is a feature of this organism?
1.It has a single eyespot at the end of the nerve cord.
2.It is jawless.
3.It has paired fins and scales.
4.It has waterproof skin.
What pattern of inheritance occurs when a light blue-colored flower results from a cross between a dark blue-colored flower and a white-colored flower?
A) incomplete dominance B) codominance C) independent assortment D) sex linkage