Module 01: Framework for Maternal and Child Health Nursing Focusing on at Risk, and Sick Client Flashcards
This is known as the basic units of heredity that determine both the physical and cognitive characteristics of people.
GENES
Genes are composed of what?
These are composed of segments of DNA; they are woven into strands into the nucleus of all the body cells to form the chromosomes.
Genes are woven into strands into the nucleus of all the body cells to form the ____________.
CHROMOSOMES
This is the type of cell division that occurs in non reproductive cells. They produce the exact copies of the parent cell.
Mitosis
This type of cell division occurs in reproductive cells or gametes. They produce egg and sperm cells with half of the genetic material of parent cells.
Meiosis
Explain the difference between haploid and diploid.
(A) Haploid = 23 chromosomes (To produce the offspring)
(B) Diploid = 46 chromosomes
Mitosis results to what?
Into two identical daughter cells (Chromosomes from the gametes (egg and sperm cells)
Meiosis results to what?
Four sex cells (22 homologous autosomal pairs + 1 pair of sex chromosomes)
Sex is determined by what?
TWO SEX CHROMOSOMES
(A) FEMALE: XX
(B) MALE: XY
This is the study of chromosomes by light microscopy and the way by which cellular aberrations are identified.
CYTOGENETICS
This pertains to the complete set of genes present (about 50,000 to 100,000).
GENOME
A normal genome is abbreviated as what?
46XX or 46XY (total number of autosomes plus a graphic description of the sex chromosome present)
This pertains to the actual gene composition.
GENOTYPE
This refers to his or her outward appearance of
the expression of genes.
PHENOTYPE
What is the difference between a genotype and phenotype?
(A) Genotypes are the genetic make-up of an individual.
(B) Phenotypes are the physical traits and characteristics of an
individual and are influenced by their genotype and the environment. 3
This pertains to the field of biology that studies how characteristics or traits are passed from parent to child.
GENETICS
Who is known as the Father of Genetics?
Gregor Mendel (Austrian Monk who gardened and grew peas in the mid 1800s).
What are the seven (7) different traits in pea plant?
(A) Height
(B) Pod appearance
(C) Seed texture
(D) Position of flowers
(E) Flower color
(F) Pod color
(G) Seed color
This explains the principle of genetic inheritance of disease are the same as those that govern genetic inheritance of the other physical characteristics.
Mandelian Inheritance: Dominant and Recessive Patterns
This pertains to the mode of genes wherein there are two healthy genes from the mother and father.
Homozygous
This pertains to the mode of genes wherein one gene is healthy and the other gene is unhealthy.
Heterozygous
This pertains to the interaction between multiple genes and multiple environmental factors.
Multifactorial Inheritance
Explain the process of genomic imprinting.
This occurs in few special genes, wherein alleles inherited from the father are expressed differently than alleles inherited from the mother.
This type of abnormality occurs when there is uneven cellular division during meiosis or when there is failure of homologous chromosomes to separate properly.
Nondisjunction Abnormalities
Chromosomal Abnormalities: Cytogenetic Disorders
What are the two types of structural abnormalities?
(A) Deletion abnormalities
(B) Translocation abnormalities
This occurs when a portion of the chromosomes is missing or deleted.
Deletions
This occurs when a portion of one chromosome is transferred to another chromosome.
Translocation
This pertains to the study of the way such disorders occur.
Genetics