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SEX RELATED COLOR BLIND TEST
INHERITANCE
PPT of:
Sir. Jean David P. Climaco
LPT
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SEX RELATED
INHERITANCE
It is a type of inheritance where
the traits that the offspring will
3 TYPES OF SEX
inherit depends on the sex that INHERITANCE
they will have.
X LINKED TRAITS Y LINKED TRAITS
1. SEX-LINKED TRAITS
Traits that are specifically on sex
chromosomes
Color Blindness Hemophilia Hypertrichosis
GENES LOCATED IN X CHROMOSOMES ARE
It occurs when you are unable to see It is a bleeding disorder, a problem Hypertrichosis of the ears (or hairy
CALLED X-LINKED TRAITS.
colors in a normal way with a persons blood makes them ears) is a condition wherein there is a
GENES ON Y CHROMOSOMES ARE CALLED Y- bleed longer than a person without conspicuous growth of hair on the
LINKED TRAITS. hemophilia outside rim of the ear.
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Expression of SAMPLE PROBLEM 1: SAMPLE PROBLEM 1:
Colorblindness in Human Normal color vision is dominant (N) over color blind vision ( n ) in
human. A husband with normal color vision XᴺY has a pregnant
Normal color vision is dominant (N) over color blind vision wife who is a carrier of heterozygous normal color vision ( XᴺXⁿ ).
( n ) in human. A husband with normal color vision (XᴺY) Is there any chance that their child will be a female color blind?
has a pregnant wife who is a carrier of heterozygous
normal color vision ( XᴺXⁿ ). Is there any chance that their
child will be a female color blind?
SAMPLE PROBLEM 2: SAMPLE PROBLEM 2: PRACTICE
Normal color vision is a dominant ( N ) over color blind Normal color vision is a dominant ( N ) over color blind vision ( n ) in GET THE PHENOTYPIC AND GENOTYPIC PERCANTAGE
human USING PUNNET SQUARE
vision ( n ) in human
Anthony and Sheena are going to have their first baby. Anthony carries a
Anthony and Sheena are going to have their first baby. normal color vision trait ( XᴺY ) while Sheena carries a color blind trait (
1. XⁿY x XᴺXⁿ
Anthony carries a normal color vision trait ( XᴺY ) while XⁿXⁿ ). Is there any chance that the child will be a color a female normal
color vision carrier?
Sheena carries a color blind trait ( XⁿXⁿ ). Is there any
chance that the child will be a female normal color vision
carrier? 2. XⁿY x XⁿXⁿ
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Female Lactation in Cattle Sample Problem 1:
2. SEX LIMITED TRAITS
are traits which are exclusively A female homozygous lactating cattle ( XᴸXᴸ ) mates with
expressed in one sex of the species a male not lactating cattle ( XˡYˡ ). What will be the
possible sex and traits the offspring will inherit?
Sample Problem 1: Sample Problem 2: Sample Problem 2:
A female homozygous lactating cattle ( XᴸXᴸ ) mates with What will be the possible traits and sex of the offspring if
a male not lactating cattle ( XˡYˡ ). What will be the What will be the possible traits and sex of the offspring if a female heterozygous lactating cattle ( XᴸXˡ ) mates with
possible sex and traits the offspring will inherit? a female heterozygous lactating cattle ( XᴸXˡ ) mates with a male not lactating cattle ( XˡYˡ )?
a male not lactating cattle ( XˡYˡ )?
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Expression of Pattern of Sample Problem 1:
3. SEX INFLUENCE TRAITS baldness in humans
Traits that are expressed in both Gino is a carrier of homozygous bald ( XᴮYᴮ ), while Anna
sexes (male and female ) but more his pregnant partner is a carrier of heterozygous non-bald
frequently in one sex. ( Xᴮ Xᵇ ). A few weeks from now, they are expecting their
first child. Based on the gametes carried by the parents,
will be there any chance that their child is female of bald
trait?
Harelip Gout Baldness
Sample Problem 1: Sample Problem 2: Sample Problem 2:
Gino is a carrier of homozygous bald ( XᴮYᴮ ), while Anna Troy and Gabriella are expecting to have their first child
his pregnant partner is a carrier of heterozygous non-bald at the end of the month. Troy is a carrier of heterozygous
Troy and Gabriella are expecting to have their first child
( Xᴮ Xᵇ ). A few weeks from now, they are expecting their non-bald trait ( XᴮYᵇ ), while Gabriella is a carrier of the
first child. Based on the gametes carried by the parents, at the end of the month. Troy is a carrier of heterozygous
heterozygous non-bald trait ( XᴮXᵇ ). Will there be a
will be there any chance that their child is female of bald non-bald trait ( XᴮYᵇ ), while Gabriella is a carrier of the chance that their child be a male non-bald carrier?
trait? heterozygous non-bald trait ( XᴮXᵇ ). Will there be a
chance that their child be a male non-bald carrier?
