Answer:
<em>The zodiacal sign of Taurus does not coincide with the constellation of Taurus. It is a continuation of the sign of Aries and represents the second 30 degrees of the zodiacal circle. The sign of Aries represents the beginning of spring and with it the beginning of life, while Taurus is a fixed sign that continues what Aries has started. Life is in full bloom in the sign of Taurus.
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<em>The stars in Taurus constellation host two open clusters, the Pleiades and the Hyades and are mostly located at the end of the sign of Taurus and the beginning of the zodiacal sign of Gemini. In the Early Bronze Age it marked the location of the Sun during the spring equinox, just like the constellation of Aries represented the equinox over 2000 years ago. The constellation of Taurus was linked to it 5000 to 1700 BC, before the precession of the equinox moved our perspective to the sign of Aries.</em>
<span>The phrenic nerve! Is typically associated with hiccups
hope that helps:)</span><span />
Answer:
d. DNA polymerase begins adding nucleotides at the 5' end of the template
Explanation:
Polymerase DNA always works in one direction, synthesizing the new 5' to 3' oriented chains and adding nucleotides to the 3' end of a new synthesis chain by forming phosphodiester bonds between the phosphate of a nucleotide and the sugar of the anterior nucleotide.
Because DNA polymerase only acts in a 5' to 3' direction, replication along a chain, the leading chain, occurs continuously. The synthesis of the opposite chain, the delayed chain, occurs discontinuously because the DNA polymerase must wait for the replication fork to open. Over the delayed chain, short segments of DNA called Okazaki fragments (named after Reiji and Tsuneko Okazaki, the scientists who discovered these fragments) are synthesized as polymerase DNA works out of the replication fork. Ligase DNA catalyzes the covalent bonds between Okazaki fragments in the delayed chain to ensure there are no gaps in the phosphodiester skeleton. Finally, the first ones are removed and these gaps are filled by the DNA polymerase.
Answer:
b. the new species must be unable to breed with the original species.
Explanation:
By definition, species are defined as groups of similar organisms that can live and breed freely. This means that individuals in that species can interbreed and produce viable, fertile offspring. However, two different species cannot interbreed to produce fertile offspring due to biological barriers known as mechanisms of reproduction isolation.
These barriers are broadly classified as pre and postzygotic. Prezygotic barriers include the following:
- Habitat isolation: Two species occupy entirely different and distant habitats.
- Temporal isolation: Two species procreate at different times of the year.
- Behavioral isolation: Two species exhibit different mating behaviors.
- Gametic isolation: The gametes of the two species cannot fertilize.
- Mechanical isolation
Speciation, the production of an entirely new species, requires a maintenance of genetic diversity. Therefore, the new and original species cannot interbreed as this would limit the gene pool and decrease genetic variations.
