need help quickly please
If barred pattern on chicken wings is a sex linked trait, set up a cross (hen and rooster), in which they the newly hatched chicks can be determined as male or female based on the barred pattern.
and Color Blindness is inherited as a sex linked recessive. If
sorry the last one go cut off.. and was wrong one
A man and his wife both have normal vision, but a daughter who has color blindness can the man sue his wife for infidelity?
No.
http://www.colourblindawareness.org/colour-blindness/inherited-colour-vision-deficiency/
To determine the sex of newly hatched chicks based on the barred pattern, you need to understand the inheritance of sex-linked traits in chickens. In chickens, the barred pattern is a sex-linked trait that is carried on the Z chromosome. The Z chromosome is present in both males (ZZ) and females (ZW), but females have two different sex chromosomes.
To set up a cross for the barred pattern, you would need to know the genotype of the hen and the rooster. Let's say the hen is heterozygous for the barred pattern (Bb) and the rooster does not have the barred pattern (bb). The genotype of the offspring will depend on the sex of the chicks:
1. Male chicks (ZZ): Male chicks receive one Z chromosome from the rooster and one Z chromosome from the hen. Since the barred pattern is carried on the Z chromosome, ZZ males will express the barred pattern. So, male chicks showing the barred pattern will be heterozygous for the barred pattern (Bb).
2. Female chicks (ZW): Female chicks receive one Z chromosome from the rooster and one W chromosome from the hen. Since the barred pattern is carried on the Z chromosome, the presence of the W chromosome in females overrides the expression of the barred pattern. Therefore, female chicks will not have the barred pattern.
So, you can determine the sex of the newly hatched chicks based on whether they display the barred pattern. Chicks displaying the barred pattern will be male, while chicks without the barred pattern will be female.
Now, moving on to color blindness, which is inherited as a sex-linked recessive trait. This means that the gene responsible for color blindness is located on the sex chromosome, typically the X chromosome. Males have one X chromosome and one Y chromosome (XY), while females have two X chromosomes (XX).
If we assume that the mother carries the color blindness gene (XcXc) and the father does not carry the gene (XCY), the genotype of the offspring will depend on their sex:
1. Male offspring: Males receive the X chromosome from the mother and the Y chromosome from the father. Since color blindness is a recessive trait, the male offspring will only be color blind if they inherit the X chromosome carrying the color blindness gene from their mother. Therefore, male offspring will be color blind if they receive the Xc chromosome from the mother and the Y chromosome from the father (XcY).
2. Female offspring: Females receive an X chromosome from each parent. To be color blind, females must inherit the color blindness gene from both parents. Therefore, female offspring will be color blind only if they receive the Xc chromosome from both the mother and the father (XcXc or XcX).
So, in summary, if the mother is color blind (XcXc) and the father is not color blind (XCY), the color blindness trait will be inherited as follows: male offspring will be color blind (XcY) and female offspring will be carriers of the color blindness gene (XcX or XcXc) but not color blind unless they inherit the color blindness gene from their father as well.