Pedigrees and Sex Linked Traits Outcome l I
- Slides: 22
Pedigrees and Sex Linked Traits Outcome l I will explore how traits are inherited through generations by solving autosomal and sexlinked pedigrees.
Sex Chromosomes l l l X and Y are sex chromosomes The other 22 pairs are autosomal(body) chromosomes Males = XY Females = XX Not true homologous pairs – X has more genes
X and Y l Males – – l Get Y from dad Get X from mom Females – – Get one X from dad Get one X from mom
Sex-linked traits l X-linked – The inheritance pattern of genes located on the X chromosome
Hemophilia Video l https: //www. phd. msu. edu/divisions/pediatricadolescent-hematology-oncology/educational -videos-about-hemophilia. html
X-Linked Punnett Square Sex linked H=normal & h=hemophilia Cross: XHXh x Xh. Y XH Xh Xh Xh Y H X Y h X Y • What is the chance that their son will have hemophilia? 50% • What is the chance that their daughter will have hemophilia? 50%
Sex-linked worksheet l l Working with your table, complete the sex linked worksheet in your notes. You will have 6 minutes!
Pedigrees l a chart that shows how a trait (phenotype) is inherited through a family
Pedigrees l l circles: females squares: males shaded: individual with trait/disease Half-shaded: carriers for a trait but does not express the trait.
Generation / Individual Practice l l l Generations are the rows in a pedigree Individuals are labeled across a pedigree Lines down represent offspring I 1 2 II 1 2 3 III 1 2 3 4
Quick Quiz l a. b. c. d. Individual A is A male who expresses the trait A female who does not express the trait A female who does express the trait What do we call this individual? Carrier
Quick Quiz l a. b. c. d. Individual D is A male who expresses the trait A female who does not express the trait A female who does express the trait
Quick Quiz l a. b. c. d. Individual H is A male who expresses the trait A female who does not express the trait A female who does express the trait
Outcome l I will explore how traits are inherited through generations by solving autosomal and sexlinked pedigrees.
Fugates of Kentucky: Skin Bluer than Lake Louise l http: //www. youtube. com/watch? v=4 i. JVWMR 4 Uq 0
Fugates of Kentucky: Skin Bluer than Lake Louise l l l Methemoglobinemia blood disorder with an abnormal amount of methemoglobin - a form of hemoglobin reduced ability to release oxygen to tissues - gives blood a bluish color
Autosomal Recessive l l Trait appears only when two parents by chance carry the hidden allele Affected individual inherits both recessive alleles Example: sickle cell disease Who could be a carrier?
Autosomal Dominant l l l Trait appears in every generation, in about half of descendants (assuming a heterozygous carrier) Affected individual has at least one dominant allele Example: Huntington’s disease
X-linked Recessive l l Mother passes on to half of sons; half of daughters carry it. Father never passes on trait. Examples: Hemophilia, color blindness Why do more men have it? Who could be a carrier? Can men be carrier?
X-linked Dominant l l Father passes trait to all daughters; no sons. Mother passes on to half of children. Example: Rett syndrome
Outcome l I will explore how traits are inherited through generations by solving autosomal and sexlinked pedigrees.
- Kurt bumby
- Sex snv
- Sex sex sex
- Sex sex sex
- Secondary sexual characters
- X-linked hemophilia punnett square
- Sex-linked traits examples
- Sex linkage
- A and b punnett square
- Sex linked dominant pedigree
- Sex linked trait
- Sex determination in drosophilla
- Sex determination and sex linkage
- Pedigree chart and punnett square
- The karyotypel has a turner syndrome
- H h
- Pedigrees and karyotypes
- Singly linked list vs doubly linked list
- Difference between an array and a linked list
- Fungsi linked list
- Whats sex linked
- Sex linked pedigree
- Sexlinked traits