NON-MENDELIAN GENETICS: SEX-LINKED TRAITS | SEX INFLUENCED TRAITS | SEX-LIMITED TRAITS | SCIENCE 9
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12 ماه پیش
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2:03
2:03 Sex-linked traits overview
3:16 Genetic table of color blindness
4:21 Sample Problem 1 (color blindness)
5:46 Genetic table of Hemophilia
6:24 Sample Problem 2 (Hemophilia)
4:15 Try it activity (sex-linked traits)
8:06 Sex-Influenced Traits overview
8:42 Genetic table for Baldness
9:26 Sample Problem 3 (Baldness)
11:00 Try it activity (sex-influenced traits)
11:15 Sex Limited traits overview
Not all traits are controlled by alleles found in autosomes. There are traits governed by the sex chromosomes.
These traits are called sex-linked traits.
Sex-linked traits are recessive These are traits that are found on either one of the sex chromosomes.
Sex-linked traits affect both males and females. But in some cases, one particular sex is more prone to have a sex-linked trait.
A sex-linked trait is a trait genetically determined by an allele located on the sex chromosome. A trait that is determined by the allele on the X chromosome is particularly described as X-linked whereas that trait determined by the allele on the Y chromosome is said to be Y-linked.
SEX-INFLUENCED TRAITS
- are autosomal traits that are influenced by sex hormones
- It is also a recessive trait
One of the examples of SEX-INFLUENCED TRAITS is baldness and it is influenced by the hormone testosterone.
And since males have a higher level of testosterone compared to females If a male has one recessive allele, he will show that trait, but it will take two recessives for the female to show that same trait.
Sex-limited traits are those traits limited to only one sex. Lactation is a good example of a sex-limited trait that is exclusively among females.
3:16 Genetic table of color blindness
4:21 Sample Problem 1 (color blindness)
5:46 Genetic table of Hemophilia
6:24 Sample Problem 2 (Hemophilia)
4:15 Try it activity (sex-linked traits)
8:06 Sex-Influenced Traits overview
8:42 Genetic table for Baldness
9:26 Sample Problem 3 (Baldness)
11:00 Try it activity (sex-influenced traits)
11:15 Sex Limited traits overview
Not all traits are controlled by alleles found in autosomes. There are traits governed by the sex chromosomes.
These traits are called sex-linked traits.
Sex-linked traits are recessive These are traits that are found on either one of the sex chromosomes.
Sex-linked traits affect both males and females. But in some cases, one particular sex is more prone to have a sex-linked trait.
A sex-linked trait is a trait genetically determined by an allele located on the sex chromosome. A trait that is determined by the allele on the X chromosome is particularly described as X-linked whereas that trait determined by the allele on the Y chromosome is said to be Y-linked.
SEX-INFLUENCED TRAITS
- are autosomal traits that are influenced by sex hormones
- It is also a recessive trait
One of the examples of SEX-INFLUENCED TRAITS is baldness and it is influenced by the hormone testosterone.
And since males have a higher level of testosterone compared to females If a male has one recessive allele, he will show that trait, but it will take two recessives for the female to show that same trait.
Sex-limited traits are those traits limited to only one sex. Lactation is a good example of a sex-limited trait that is exclusively among females.
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