Human Blood Type Sample Problems. Table 1: The following tables give information on human blood types needed in problems below. Alleles of types I A and I B are dominant over type i.
Em dash (Em rule) An em dash (â) is longer than an en dash (â) and three times as long as a hyphen (-). Donât be afraid of it. It is useful and versatile, and too few writers make use of it. Uses of the em dash. 1. Em dashes set apart parenthetical phrases or clauses in a sentence. In this use, em dashes are similar to commas and parentheses, but there are subtle differences. For example, em dashes are used when a parenthetical remark contains an internal comma or would otherwise sound awkward if enclosed by commas.
On the other hand, the hyphen is used to join two different words in order to create a compound word. It is also used to incorporate an independent clause, or an appositive, within a sentence, in order to separate this from the rest of the sentence.here are actually three types of lines: the hyphen, en dash and the em dash. They are also three different lengths. Type these on the computer using the dash key and you will see. The em dash is used to separate a thought in a sentence.