Answer:
The duplication of a cluster of four Hox genes is equally likely as the duplication of a single Hox gene.
Explanation:
This comes from the definition of the parsimony principle, which is the action of choosing the simplest scientific explanation fitting the given evidence, meaning that all other elements are equal when evaluating the hypothesis. In biology the best hypothesis is the one that requires the fewest evolutionary changes.
Since three independent duplications of an individual Hox gene is in evolutionary terms, more complex than a single duplication or a cluster, then that hypothesis would be the most parsimonious.
Answer:
A couple of homologous chromosomes, or homologs, are a set of one maternal and one paternal chromosome that pair up with each other inside a cell during fertilization.
Explanation:
It will increase blood
pH. This is because pCO2 also reduces. pCO2 is critical in the <span>maintenance of blood pH. Dissolved CO2 from respiring
tissues dissolves in blood to form carbonic acid. The carbonic acid partially dissociated
into H+ ions and its conjugate base (bicarbonate ions). Carbonic anhydrase
catalyzes the formation of carbonic acid (in tissues) and vice versa (in the lungs).
In the lungs, the carbon dioxide is expelled. </span>
Answer:
The star sm0313, was discovered using the ANU skymapper telescope at the siding spring observatory and later confirmed by the megellan telescope in Chile. Somewhat surprisingly, it's located a "mere" 6,000 thousand light-years away, they origins date back to the beginning of time.
<span>The correct answer is B. crepuscular activity. Crepuscular refers to animals and birds that are active at night, during twilight. So, these little birds don't usually travel large distances during the day, first of all, because they can't due to their small wings and plump bodies, and second of all, in order to avoid getting eating by a larger bird or animal. So they are usually nocturnal birds that live during the night.</span>
