Barr bodies - Study guides, Class notes & Summaries

histones are rich in which 2 AA's - correct answer lysine & argenine Barr bodies (what, type of chromatin) - correct answer inactive X chromosomes heterochromatin (highly condensed, sterically inaccessible) less condensed, transcriptionally active, sterically accessible chromatin - correct answer euchromatin DNA methylation at CpG islands - correct answer represses transcription "CpG Methylation makes DNA Mute" DNA methylation (what is methylated and why?) - correct answer tem...

Test Bank Porth Pathophysiology Concepts of Altered Health States 2nd Canadian Edition Table of Contents Chapter 01: Concepts of Health and Disease ................................................................................................. 3 Chapter 02: Concepts of Altered Health in Children ................................................................................... 14 Chapter 03: Concepts of Altered Health in Older Adults .............................................................

Power equation= P=fv f=force v=velocity Which of the following is LEAST likely to occur in a muscle fiber that is metabolizing anaerobically? A.Fermentation of glucose to lactic acid B.Phosphorylation of ADP within the electron transport chain C.Depletion of stores of glycogen D.Acidification of the cytoplasm B fast-twitch muscle Muscle fibers that contract rapidly and powerfully, with little endurance. They have few mitochondria and large glycogen reserves. They depen...

Genetics 3333 Exam 3 Thompson Questions with Answers less than needed for x - Answer-Suppose that the dan from bacterial species y was shown to contain 15% guanine relative to the dan for species x. the amount of energy necessary to completely dissociate species y dan into tow sing strands would be: d - Answer-Polytene chromosomes: -contain chromosome arms that can be distinguished without specializing g banding b- contains hundreds of replicated dan strands c- contain heterochroamin that m...

PSS 3421 Final Exam 1 Questions & Answers 2024/2025 Gender is determined in humans as: - ANSWERSXY for males and XX for females Barr bodies are: - ANSWERSAn inactive X chromosome in females, and explains why having two X chromosomes is not harmful, and a spot seen in the nucleus of cheek cells of human females What is the association of the Y chromosome and gender in fruit flies? - ANSWERSGender is determined by both the number of X chromosomes and the number of autosomes Gender in...

Test Bank Porth Pathophysiology Concepts of Altered Health States 2nd Canadian EditionTable of Contents Chapter 01: Concepts of Health and Disease .......................................................................................................... 2 Chapter 02: Concepts of Altered Health in Children ............................................................................................. 13 Chapter 03: Concepts of Altered Health in Older Adults ............................................

USMLE Biochemistry Exam Questions with Correct Answers Heterochromatin - ANSWER Highly Condensed DNA Transcriptionally inactive Ex. Barr bodies (inactivated X chromosomes) Euchromatin - ANSWER Less condensed DNA Transcriptionally active DNA Methylation - ANSWER Occurs at *CpG Islands* to repress transcription 'CpG Methylation Makes DNA MUTE' Template strand *cytosine* and *adenine* are methylated, which allow mismatch repair enzymes to distingu...

Chromosomal Abnormalities Test Questions with Answers What type of chromosomal abnormality causes Klinefelter Syndrome? - Answer-Klinefelter Syndrome 47, XXY is a numerical abnormality in which an affected individual has one extra copy of chromosome X. Affected males have the presence of Barr bodies. What are some of the manifestations of Klinefelters Syndrome? - Answer-Klinefelters Syndrome 47, XXY males are sterile, may present with testicular atrophy and gynecomastia. What type of c...

USMLE Biochemistry Exam Questions with Correct Answers Heterochromatin - ANSWER Highly Condensed DNA Transcriptionally inactive Ex. Barr bodies (inactivated X chromosomes) Euchromatin - ANSWER Less condensed DNA Transcriptionally active DNA Methylation - ANSWER Occurs at *CpG Islands* to repress transcription 'CpG Methylation Makes DNA MUTE' Template strand *cytosine* and *adenine* are methylated, which allow mismatch repair enzymes to distingu...

BIO SCI 93: DNA TO ORGANISMS (UCI) FINAL EXAM 2024 WITH 100% CORRECT ANSWERS When does crossing over occur? - correct answer during Meiosis I between non-sister chromatids Crossing Over - correct answer One mechanism by which genetic variability is generated during Meiosis (looks like a little switch/tiny tag) When can nondisjunction occur? - correct answer 1. Anaphase of Mitosis 2. Anaphase I of Meiosis 3. Anaphase II of Meiosis Nondisjunction - correct answer Chromosomes are u...