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The possessive form of an English noun, or more generally a noun phrase, is made by suffixing a morpheme which is represented orthographically as ' s (the letter s preceded by an apostrophe), and is pronounced in the same way as the regular English plural ending (e)s: namely, as / ɪ z / when following a sibilant sound (/ s /, / z /, / ʃ /, / ʒ /, / tʃ / or / dʒ /), as / s / when following ...
After comparing his work on locusts with Henking's and others, McClung noted that only half the sperm received an X chromosome. He called this chromosome an accessory chromosome, and insisted (correctly) that it was a proper chromosome, and theorized (incorrectly) that it was the male-determining chromosome. [4]
The apostrophe is used in English to indicate what is, for historical reasons, misleadingly called the possessive case in the English language. This case was called the genitive until the 18th century and, like the genitive case in other languages, expresses relationships other than possession .
The SHOX gene in the PAR1 region is the gene most commonly associated with and well understood with regards to disorders in humans, [17] but all pseudoautosomal genes escape X-inactivation and are therefore candidates for having gene dosage effects in sex chromosome aneuploidy conditions (45,X, 47,XXX, 47,XXY, 47,XYY, etc.).
Maternally-derived chromosome rearrangement p: Short arm of a chromosome pat: Paternally-derived chromosome rearrangement psu dic: pseudo dicentric – only one centromere in a dicentric chromosome is active q: Long arm of a chromosome r: Ring chromosome t: Translocation: ter: Terminal end of arm (e.g. 2qter refers to the end of the long arm of ...
Most spiders have a variation of the XO system in which males have two different X chromosomes (X 1 X 2 O), while females have a pair of X 1 chromosomes and a pair of X 2 chromosomes (X 1 X 1 X 2 X 2). [1] Some spiders have more complex systems involving as many as 13 different X chromosomes. [1] Some Drosophila species have XO males. [10]
According to the OED, [13] the first reference to possessive pronouns is found in 1530; the first use of possessive as a noun occurs in 1591, the first use of possessive case (which notes that it is like the Latin genitive, and may be called the genitive case in reference to English also) occurs in 1763, and the first use of possessive ...
Use the apostrophe in expressions such as two years' time, several hours' delay etc. An apostrophe should be used to indicate the plural of single letters - p's and q's. How about this: Possessives To form the possessive of a singular noun that ends in s, the general rule is to add an apostrophe and an s, for example, Charles's book. Exceptions ...