Sry gene Study guides, Class notes & Summaries

BIOLOGY MIDTERMS STUDY GUIDE EXAM QUESTIONS WITH 100% CORRECT ANSWERS Meiosis involves_________divisions - answer2 What are the two divisions of Meiosis - answerMeiosis I and Meiosis II Crossing over occurs in ___________of Meiosis I, not in Meiosis II - answerProphase The chances of a woman over 40 having a child with Down syndrome - answer1 in 80 The chances of a woman under 40 having a child with Down syndrome - answer1 in 800 During metaphase I, the homologous chromosomes align at th...

Sex Chromosomes X (large) and Y (small) -only the ends of the Y chromosome have regions that are homologous with corresponding regions of x chromosomes SRY Gene required for development of testes -sex determining region y protein Ovum contains an x Sperm can contain an x or y Sex-Linked Gene gene located on either sex chromosome -50 to 60 Y-linked genes (found on Y chromosomes) -800 to 900 X-linked genes (found on X chromosomes) X-Linked Genes mostly genes unrelated to sex ...

BIOLOGY MIDTERMS STUDY GUIDE EXAM QUESTIONS WITH 100% CORRECT ANSWERS Meiosis involves_________divisions - answer2 What are the two divisions of Meiosis - answerMeiosis I and Meiosis II Crossing over occurs in ___________of Meiosis I, not in Meiosis II - answerProphase The chances of a woman over 40 having a child with Down syndrome - answer1 in 80 The chances of a woman under 40 having a child with Down syndrome - answer1 in 800 During metaphase I, the homologous chromosomes align at th...

Bio 101 EXAM 4 Questions With Verified Solutions What results if a fragment of a chromosome breaks off and then reattaches to the original chromosome at the same place but in the reverse direction? - answerAn inversion A couple has a child with Down syndrome. The mother is 39 years old at the time of delivery. Which of the following is the most probable cause of the child's condition? - answerNondisjunction occurred in one member of the couple during gamete production. In a typical anima...

Homozygous - An organism that has two identical alleles for a specific trait Heterozygous - An organism that has two different alleles for a specific trait. Gregor Mendel - Father of Genetics, studied pea plants and used math and probability to show how traits would show up in the next generation F1 Generation - the first generation of offspring obtained from an experimental cross of two organisms., offspring of the p generation F2 Generation - the second generation of offspring, obtained ...

MTM Exam 4 Diseases Latest Update with Verified Solutions DMD -loss of function, recessive, haplosufficiency -symptoms present < 5 yoa -progressive symmetrical muscular weakness -wheelchair dependent by 12-13 yoa -life expectancy = teens - 30s -do not reproduce -calf pseudohypertrophy -elevated serum creatine kinase -unable to perform neck flexion -complete absence of dystrophin -mutations: deletions, frameshift, nonsense -exon length is NOT a multiple of 3 -frameshifts -> null mutations ...

Complete Androgen Insensitivity Syndrome correct answer: - XY individual has normal SRY - testosterone produced, male internal genitalia and female external partial insensitivity correct answer: What percentage of XY DSDs is caused by deletion of SRY gene? correct answer: 15% partial androgen insensitivity syndrome correct answer: - at puberty, female child will develop into male adult (boost of testosterone at puberty) how testes develop correct answer: Y chromosome, function...

Bio 101 EXAM 4 Questions With Verified Solutions What results if a fragment of a chromosome breaks off and then reattaches to the original chromosome at the same place but in the reverse direction? - answerAn inversion A couple has a child with Down syndrome. The mother is 39 years old at the time of delivery. Which of the following is the most probable cause of the child's condition? - answerNondisjunction occurred in one member of the couple during gamete production. In a typical anima...

Exam 2 Genetics Chapter 7  Nondisjunction in meiosis – can cause XXX Syndrome or XYY Condition  47 XYY – famous o There’s this idea that there is an over representation of XYY of men in prison o Some people think that people with XYY are more likely to become criminals or get put in jail o Above average in height and below average in intelligence  Sex determination o At 5 or 6 weeks there is a potential for the fetus to get a Y chromosome and become a male  PAR: pseu...

Also known as the G spot, this anatomical structure has been shown to secrete fluid similar to male prostate fluid skene's glands which of the following anatomical structures is responsible for spermatogenesis seminiferous tubules the two long cylinders of spongy tissue lying on top of the penis are called the corpora cavernosa the ____ is homologous to the ovary testis the ___ is a long tube, around 6 meters or 20 feet in length, coiled into a small crescent-sha...