BIOL 1111 Study Guide - Midterm Guide: Ribosomal Rna, Barr Body, Allosome

• School: Northeastern University
• Department: Biology
• Course: BIOL 1111
• Professor: Mary- Susan Potts- Santone

Document Summary

This is a list of concepts and terms you should review for your 4th lecture exam friday, dec. 14, 2015 at 3:30 pm in ell (blackman) aud. This list is not meant to be all inclusive but rather should be used as a guideline to help you organize your studying. Sex chromosome syndromes - abnormal numbers of x and/or y chromosomes: caused by misjunction during oogenesis or spermatogenesis, turner syndrome (xo) Lack of barr body, eggs wont be in place. >90% spontaneously abort short w/ broad chest, premature aging, webbing of neck can be of normal intelligence: klinefelter syndrome (xxy) Male w/ underdeveloped testes and prostate, some breast development, no facial hair. Near normal intelligence unless it"s really severe: poly-x females (xxx) Xxx is simply taller and leaner than usual. More than 3x renders severe mental retardation. Many menstruate regularly and are fertile: jacobs syndrome (xyy) Can only result from nondisjunction during spermatogenesis.