Sex linked traits biology

Sex-linked dominant is a rare way that a trait or disorder can be passed down through families. One abnormal gene on the X chromosome can cause a sex-linked dominant disease. Inheritance of a specific disease, condition, or trait depends on the type of chromosome that is affected. It can be either an autosomal chromosome or a sex chromosome. It also depends on whether the trait is dominant or recessive.

Sex-Linked Traits and Disorders

Sex-linked Inheritance ( Read ) | Biology | CK Foundation

Therefore, Morgan considered the eye color characteristic is a sex-linked characteristic where its genes are carried on the sex chromosomes X , where the sex-chromosome Y carries few genes of them only. Colour blindness. In humans , the chromosome X carries genes responsible for somebody characteristics, Such as Colour blindness , Haemophilia , Short-sightedness and Muscle atrophy. Sex chromosome Y in male human carries some genes without the presence of corresponding genes to them on the sex chromosome X , such as the gene responsible for the appearance of hair on ear margins, So, these traits are restricted only to males. Colour blindness is genetic case cause the inability of distinguishing the colours especially the red and green ones. The case of haemophilia is caused by a recessive gene carried on the chromosome X , This gene causes a liquidity in blood due to lack of some substances necessary for blood clotting , Haemophilia disease may cause death especially in childhood stage.

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In humans, as well as in many other animals and some plants, the sex of the individual is determined by sex chromosomes. The sex chromosomes are one pair of non-homologous chromosomes. In addition to 22 homologous pairs of autosomes, human females have a homologous pair of X chromosomes, whereas human males have an XY chromosome pair.
Genetics includes the study of heredity, or how traits are passed from parents to offspring. The topics of genetics vary and are constantly changing as we learn more about the genome and how we are influenced by our genes. Heredity Simulation — use popsicle sticks to show how alleles are inherited Penny Genetics — flip a coin to compare actual outcomes versus predicted outcomes from a punnett square Heredity Wordsearch — fill in the blank, find words.
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