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NURS 234 Exam #2 Questions And Accurate Answers
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NURS 234 Exam #2 Questions And Accurate AnswersWhat is the human genome project?
- Entailed gene mapping, which involved the determination of the constitution of human
genes
-The completion of the project in 2001 led to the identification of all genes in man
Number of genes in a genome
-about 30,000 genes in a single genome
Heredity
This involves passing of traits from parents to offspring. The passing of traits is
determined by a pair of genes from both the mother and father
Genome
All of the genetic information in an organism; all of an organism's chromosomes.
Chromosome
thread of protein and DNA found in the nucleus of most living cells, which carries
genetic information in the form of genes.
Genetic code
carry information about all of the proteins within that cell that will determine the
newborn's characteristics
Allele
pair of genes from both mother and father
,Mutated
variations of genes that may be abnormal
parts of cell
cell→nucleus→chromosome→DNA→gene
Dominant gene
will dominate a recessive gene most of the time, so that majority of the children will
inherit that trait
Recessive gene
Gene that is masked when the dominant gene is present
Carrier of gene
you can pass it on to your offspring, but it is not apparent in carrier of gene
Genetic counseling
Communication between a geneticist and parents regarding an infant's chance of
inheriting genes that may cause an abnormality, or after an infant is born and
, malformities are present
Gene therapy
- Placement of a therapeutic gene on the back of a virus vector:
- Virus enters specific cells in the body
- Carries new gene into the cell that has a missing/defective gene
- cell can make more copies of the inserted gene
Concerns about gene therapy
- Ethical, social, and legal issues
- Most are for cancer
Ovum contributes
X chromosome
Sperm contributes
Y chromosome
XX=
female
XY=
male
Sequence of fetal development
Fertilization -->
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