Dont be dumb It's clearly recessive
It is a recessive X linked form of muscular dystrophy
Rett syndrome is a rare genetic disorder that is typically caused by a mutation in the MECP2 gene located on the X chromosome. It is not classified as dominant or recessive in the traditional sense because it primarily affects individuals with two X chromosomes. It is considered an X-linked dominant disorder with variable expressivity and reduced penetrance.
Triple X syndrome is a genetic mutation characterized by the presence of an additional X chromosome in females, resulting in a karyotype of 47,XXX instead of the typical 46,XX. It is considered a numerical chromosomal abnormality, where the extra X chromosome can lead to various physical and developmental differences, though many individuals with this condition are asymptomatic.
autorecessive...both parents have to be carriers.There is a rare X-linked form caused by mutations in the OFD1gene.
Autosomal dominant, Autosomal recessive, X-linked recessive and X-linked dominant
yes it is a recessive trait
No. Triple X occurs on the sex chromosomes.
X-linked are not recessive nor dominant. X-linked just do not show. On the sex-linked chromosomes the Y chromosome of the X-Y pair dominates the trait whether its recessive or dominant!Actually, all x-linked alleles are expressed because males only have one x-chromosome, so whatever is there, dominant or recessive, is expressed.
Autosomal dominant Autosomal recessive X linked recessive.
Autosomal dominant Autosomal recessive X linked recessive.
By "test cross" you can know whether it homozygous dominant or heterozygous dominant...in homozygous both alleles code for the dominant trait, in heterozygous one allele is recessive (what you called a "hidden factor"). To perform the test cross, cross a homozygous recessive with the first generation. Lets suppose tall pea tree in the first generation is hetrozygous dominant (Xx) and has alleles X (dominant) and x (recessive). When we cross it with homozygous recessive (xx) X x x :Xx xx x :Xx xx we get half offspring showing dominant trait (Xx) and half showing recessive (xx). If the first generation was homozygous (which is not possible) the result would be X X x: Xx Xx x: Xx Xx all the offspring showing dominant trait and it doesn't really happen when we cross the first generation with homozygous recessive. It means that the genotype of first generation is heterozygous (has a hidden factor or a recessive allele x). Note:You must know what the recessive and dominant allele means...In presence of a dominant allele, recessice character is not expressed but it is present is heterozygous. If both alleles are recessive (homozygous recessive) then the recessive trait is expressed. If both the alleles are dominant (homozygous dominant) obviusly the dominant trait is showed by the individual.
Patricia Ann Jacobs(1934-)has Triple X Syndrome. She is the first lady diagnosed Triple X. She is studying genetics now.