Gene inheritance
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What hold DNA in compact form?
Chromosomes
What are the name of 1-22 chromosomes and 23 chromosomes?
1.1-22 chromosomes are autosomes inheritance 2.23 chromosome is X lined inheritance( sex chromosomes) 3.These determine whether you are a girl or boy
What is a gene and how can they do homozygous?
A gene is a short segment of DNA that can encode for proteins If both parent have the same gene it is called homozygous e.g Gene a
What are the inheritance patterns?
• If the mum has a functional gene and the dad has a change e.g T insted of G to will cause lose of function e.g because of this the red blood cell has a cresent shape and the child will be carrier of the disease • If both parent have that change in the code then the child will have the disease.
What happens in the autosome dominant inheritance?
• If the mum genes is functional and the dads gene has a gain of function gene coding, the child will have the disease because it is more dominant that the mum functional gene.
Examples of autosome recessive diseases?
Sickle cell and cystic fibrous if each parent has one effected gene the child will have the disease.
What hapens in sex-linked disease?
• If the dads x gene has a mutation and the mum gene is functional the daughter will have the gene and the son will not have it or be a carrier. • This is because the Y in the XY chromosome doesnt hold anything so it does not matter.