In humans, sex chromosomes in males and females are different. The sex chromosomes found in humans are X and Y chromosomes. X-linked trait is a trait which is inherited on the X- chromosome. According to the question, the trait is passed on a X-linked dominant condition, which means the condition is inherited on the abnormal dominant X-chromosome that will express itself even when in an heterozygous state with a normal X-chromosome.

Hence, a father affected by the condition will have a genotype; XY while a mother that does not have the condition will have a genotype: xx (two normal x chromosomes). Since the Father can only pass his X chromosome to his daughters and never his sons, all his daughters will inherit the condition (see the punnet square in attached image).

N.B: None of the sons will inherit the condition since the mother will pass normal X-chromosomes (x) to her sons.

7 0

3 years ago

Homozygous alleles are also called

Kruka [31]

Purebred is another word for homozygous

6 0

3 years ago

When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the _______ vari

Harrizon [31]

When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the C. experimental. Experimental variables are the things you are studying in the experiment and it is the only variable you can change.

7 0

3 years ago

Zane has been feeling low for the past month or so. he has little energy and difficulty concentrating. he has gained nearly 10 p

Angelina_Jolie [31]

Zane may be diagnosed with major depressive disorder.
When a person is depressed, they are feeling low all the time. They are not really interested in anything, and spend a lot of time sleeping because they don't see a point in doing anything else. This is what Zane is experiencing due to his depression.

3 0

3 years ago