Please enable JavaScript.
Coggle requires JavaScript to display documents.
ch 14 (Mendel was the first person who discovered the basic principles of…
ch 14
-
Mendel conducted an experiment in which he used only a single characteristic such as a flower color
-the F1 progeny produced from true breeding parents were monohybrids
-meaning they are heterozygous
The second law of inheritance follows two characters at the same time such as seed color and seed shape
-
-
-
law of assortment states that two or more genes assort ind. so each pair of alleles segregate independently of any other pair of alleles during gamete formation
-
-
Co dominance is two alleles that affect the pheneotype in separate, distinguishable ways
-
The Law Of Segregation states that two alleles for a heritable character separate from each other during gamete formation and end up in different gametes
An egg or sperm ont get one of the two alleles present in the somatic cells or the organism making the gamete
if an organism has identical alleles for a particular character then that allele is present in all gametes
If a dominant trait like purple crossed with a recessive like white then the F2 generation from dom:rec would come out as 705:224
-
-
Disorders
-
A dominant inherited disorder is due to the parents having dominant alleles that get passed onto their offspring
-
Genetic testing and counseling is sued when parents want to check to make sure they don't pass on any genetic disorders onto their off spring
Aminiocentesis is done for fetal testing for Tay-Sachs when a sample of amniotic fluid is taken at 15 weeks and tests are done to the fluid or on the cultured cells. The fetal cells must be cultured for several weeks to obtain sufficient numbers for kayotyping. A chromosomal defect will be seen if the fetus done have one.
Chronic villus sampling is done when a narrow tube is inserted through the cervix into the uterus and takes out a tiny section of the placenta as early as ten weeks. Due to the cells proliferating rapidly, it allows karyotyping to be done quickly and results can be found within a few hours
A recessive inherited disorder means that the disorder was inherited from one of the parent, a carrier, then given to the offspring
