NURS 445 Test 1 Review Practice Questions 2024.

NURS 445 Test 1 Review Practice Questions 2024. Proteins - CORRECT ANSWER Genes are considered a code to make _____________ Histones - CORRECT ANSWER DNA is tightly wrapped around _______ to make up a chromosome 23 - CORRECT ANSWER Humans have ___ pairs of chromosomes Mutation - CORRECT ANSWER When the sequence of DNA is changed forever; can be good or bad , inherited or acquired Hereditary - CORRECT ANSWER _______ mutations (germline) affect the sperm and egg, so if a mutation occurs here, it will be in every other cell of the body and last a person's lifetime Acquired - CORRECT ANSWER _________ mutations (somatic) happen somewhere in the person's lifespan. Causes can be environmental (ex. UV exposure). These can NOT be passed to offspring Mosaicism - CORRECT ANSWER ________ mutation happens in young embryo when mutation is in some cells but not others Polymorphisms - CORRECT ANSWER Variations of DNA sequence, chromosome, or gene. Occurs naturally True - CORRECT ANSWER True/False Genes themselves do not cause disease; it is the MUTATION that makes the gene not work Single - CORRECT ANSWER Examples of ________ gene conditions - Autosomal dominant (Huntingtons, Neurofibromatosis-1, Hyperlipidemia, Von Hippel Lindau Syndrome)) - Autosomal recessive (CF. SCA) - X-linked dominant (Fragile X) - X-linked recessive (Hemophilia, DMD)