HBIO 370

HBIO370 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE what is genetics? branch of science concerned with genes, heredity, and variation in living organisms where is genetic info stored? nucleus of a cell in the DNA who's watson, crick and Wilkins? discovered the structure of dna A and T make how many bonds? 2 bonds C and G make how many bonds? 3 bonds differences between dna and rna? - DNA has an H and RNA has an OH - DNA has Thymine and RNA has ur...

What are par genes Genes located on both X and Y chromosomes that behave like autosomes (not sex inhertied) What are shox genes and what do they determine regions within par genes that stature what is the function of 21 alpha hydroxylase? What does deficiency of this enzyme result in? enzyme crucial for production of cortisol and aldosterone. overproduction of androgens and salt wasting Aldosterone function retain water and salt and secretion of potassium cortisol function glucose avail...

DSD differences in sex development. Congenital conditions in which chromosomal, gonadal, or anatomical sex is atypical. Sex is not binary. It is a spectrum of phenotypes. It is basically discordance between genetic sex and genitalia. Male and female reproductive tracts are derived from the same _______________ tissue. embryonic If SRY is present: - It is expressed in Sertoli cells that surround and support spermatogenic cells of the testes. - Leads to the differentiation of Leydig cells (i...

karyotype cytogenic test to evaluate the size, shape, chromosome number in a cell sample phytohemaggluttinin promotes cell division colchicine prevents the formation of spindle fibers trypsin detaches cells from the flask fluorescence in situ hybridization karyotype study that uses fluorescent probe annealing with specific bands (whole chromosome probes, centromeric probes, unique sequences, CML abl (oncogene) and bcr (ser/thr kinase) comparative genomic hybridization hybridization of...

Embryo stage Weeks 1-8 Fetus stage Weeks 9-birth Progenitor Cell that can differentiate into specific cell types hypertrophy increase in cell size Hyperplasticity cells increase in number Days 7-14 Proliferation Day 14 Gastrulation— 3 distinct tissues made Days 19-21 Neurulation Days 21-24 Beginning of future head, neck and mouth and nose Weeks 3-8 Beginning organ formation Week 8 Fetus formed Compaction Loose arrangement to tight packed External polarized cells Tropho...

What are par genes Genes located on both X and Y chromosomes that behave like autosomes (not sex inhertied) What are shox genes and what do they determine regions within par genes that stature what is the function of 21 alpha hydroxylase? What does deficiency of this enzyme result in? enzyme crucial for production of cortisol and aldosterone. overproduction of androgens and salt wasting Aldosterone function retain water and salt and secretion of potassium cortisol function glucose avail...