Download Free Medical Genetic Disorders PowerPoint Presentation

Genetic Disorders PowerPoint Presentation

DOWNLOAD MEDICAL POWERPOINT PRESENTATION

About This Presentation

Description : Check out this medical PowerPoint presentation titled "Genetic Disorders".
This medical PowerPoint presentation talks about Genetic disorders which are caused by abnormalities or mutations in an individuals DNA sequence.
Genetic disorders are caused by abnormalities or mutations in an individuals DNA sequence. These mutations can be inherited from parents or occur spontaneously during the formation of gametes or early stages of fetal development. There are many types of genetic disorders, including Single-gene disorders, Chromosomal disorders, Multifactorial disorders, and Mitochondrial disorders.
Some examples of genetic disorders include Down syndrome, Cystic fibrosis, Huntingtons disease, Sickle cell anemia, and Hemophilia.

Tags : Genetic disorders, DNA sequence, Single-gene disorders, Chromosomal disorders, Multifactorial disorders, Mitochondrial disorders, Down syndrome, Cystic fibrosis, Huntingtons disease, Sickle cell anemia, Hemophilia, Genetics, Genetics PowerPoint presentation

Published on : Mar 21, 2023 | Views : 955 | Downloads : 4

Shareable Url :

Embed Code :

Comment

Transcript

Slide 1-

Genetics: Part IV Genetic Disorders
Slide 2-

What has gone wrong? 2
Slide 3-

Curriculum Framework c. Certain human genetic disorders can be attributed to the inheritance of single gene traits or specific chromosomal changes, such as nondisjunction.illustrative examples: •Sickle cell anemia •Tay-Sachs disease •Huntington’s disease •X-linked color blindness •Trisomy 21/Down syndrome •Klinefelter’s syndrome
Slide 4-

Curriculum Framework 3.A.4.b Some traits are determined by genes on sex chromosomes. Illustrative examples Sex-linked genes on sex chromosome (X in humans) In mammals and flies, the Y chromosome is very small and carries few genes
Slide 5-

Small change, Big problem 5
Slide 6-

Sex Linked Traits Traits carried on the sex chromosomes are said to be sex linked. In humans, most sex-linked traits are carried on the X chromosome. Sex-linked traits are expressed more often in human males than females. 6
Slide 7-

Example of Sex Linked Trait: Hemophilia 7
Slide 8-

Probability? 8 What is the probability that the son of a carrier female and a normal male will have hemophilia?
Slide 9-

Probability? 9 What is the probability that the son of a carrier female and a normal male will have hemophilia?
Slide 10-

Imagine a genetic counselor working with a couple who have just had a child who is suffering from Tay-Sachs disease. Neither parent has Tay-Sachs, nor does anyone in their families. Which of the following statements should this counselor make to this couple? a. “Because no one in either of your families has Tay-Sachs, you are not likely to have another baby with Tay-Sachs. You can safely have another child.” b. “Because you have had one child with Tay-Sachs, you must each carry the allele. Any child you have has a 50% chance of having the disease.” c. “Because you have had one child with Tay-Sachs, you must each carry the allele. Any child you have has a 25% chance of having the disease.” d. “Because you have had one child with Tay-Sachs, you must both carry the allele. However, since the chance of having an affected child is 25%, you may safely have thee more children without worrying about having another child with Tay-Sachs.”
Slide 11-

Example of Sex Linked Trait: Colorblindness 11
Slide 12-

Color blindness 12 Draw a Punnett Square to show how a color blind male could produce a family containing colorblind females.
Slide 13-

Is your Punnett Square like this one? 13
Slide 14-

Nondisjunction 14
Slide 15-

Nondisjunction 15
Slide 16-

Trisomy 21 16
Slide 17-

Down syndrome patients have noticeable traits 17
Slide 18-

18
Slide 19-

Huntington’s disease is a degenerative disease of the nervous system The disease has no obvious phenotypic effects until the individual is about 35 to 40 years of age Once the deterioration of the nervous system begins the condition is irreversible and fatal Huntington’s Disease: A Late-Onset Lethal Disease
Slide 20-

Huntington’s affects people after reproduction age so it continues to be maintained in a population 20 Lethal Dominant Trait
Slide 21-

Envision a family in which the grandfather, age 47, has just been diagnosed with Huntington’s disease. His daughter, age 25, now has a 2-year-old baby boy. No one else in the family has the disease. What is the probability that the daughter will contract the disease? A. 0% B. 25% C. 50% D. 75% E. 100%
Slide 22-

Nonnuclear Inheritance 22
Slide 23-

Curriculum Framework 3.A.4.c. Some traits result from nonnuclear inheritance 1. Chloroplasts and mitochondria are randomly assorted to gametes and daughter cells; thus traits determined by chloroplasts and mitochondrial DNA do not follow simple Mendelian rules. 2. In animals, mitochondrial DNA is transmitted by the egg and not by the sperm; as such, mitochondrial-determined traits are maternally inherited. 23
Slide 24-

24
Slide 25-

Mitochondrial Inheritance Sometimes referred to as Maternal Inheritance More than 40 known human disorders are attributed to mitochondrial inheritance. Links have been made between mtDNA and diabetes, certain cancers and aging just to name a few. 25
Slide 26-

Curriculum Framework 3.A.3.d Many ethical, social and medical issues surround human genetic disorders. Illustrative examples Reproduction issues Civic issues such as ownership of genetic information, privacy, historical context 26
Slide 27-

Would you want to know? 27
Slide 28-

Created by: Debra Richards Coordinator of K-12 Science Programs Bryan ISD Bryan, TX