Methods of genetic study almario, cavitenoPresentation Transcript
The genetic method is used in longtime investigations to discover andstudy the origin, trend, rate, direction,and pattern of development in thephenomena studied. It is often thoughtof as pertaining primarily to physicaland anatomical growth but actually it isbeing used increasingly for the study ofmental, social, and personalitycharacteristics as well
It is the pictorial representation of the members of the family. it is a diagram of family relationships that uses symbols to represent people and lines to represent genetic relationships.
Is used to detect the number of chromosomes and the different chromosomal abnormality. It make use of the karyotype or karyogram which is the pictorial representation of chromosomes.
Humans have 23 pairs of the same chromosomes, each pair with the genes for the same characteristics (alleles) lined up in the same order. These two corresponding chromosomes stick to one another when in meiosis (pairing).2 kinds of chromosomes: Autosomes or Somatic Chromosomes- has 22 pairs or 44 autosomes. Autosomes are made upof 2 sets of chromosomes- one from the father, and one from the mother.
SexChromosomes –there are two kinds of sex chromosomes: an X and a Y chromosome, which determine the sex of the organism. Normally, males have an X and Y pair and females a pair of X chromosomes.Note: in humans, there is a total number of chromosomes of 46.
Chromosomes are numbered from 1 to 22, and the biggest pair number of chromosomes is #1.
A method of genetic process that make use of plant experiment and analysis in order to pass through generation to generation.
A method that studies the concordance and the disconcordance of the twins.2 kinds of Twins:a.) Fraternal Twins - it is also known as Dizygotic twins (coming from 2 zygotes) - they are not really resembling to one another.
b.) Identical Twins – also known as Monozygotic twin (coming from one zygote).Concordance twin – having the same trait or both doesn’t have the trait.Disconcordance – having the different trait (the other person have one trait while the other does not).
It makes use of statistical treatment when data are many. It is mostly used in population analysis.
Null Hypothesis Alternative The null hypothesis hypothesis is a The alternative hypothesis which the hypothesis is what researcher tries to the researcher really disprove, reject or thinks is the cause of nullify. Stated in a a phenomenon. negative form. Stated in a positive form.