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Andalusian fowls have two pure forms — black and white. If black forms (BB) and white forms (WW) are crossed, F1 individuals appear blue coloured (BW), due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form?
  • a)
    1 Black : 2 Blue : 1 White
  • b)
    2 Black : 1 Blue
  • c)
    1 Black : 2 Blue
  • d)
    1 Black : 1 Blue
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Andalusian fowls have two pure forms — black and white. If black...
The cross between blue (BW) and black (BB) forms can be shown as :

Thus, black and blue individuals are produced in the ratio of 1:1
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Most Upvoted Answer
Andalusian fowls have two pure forms — black and white. If black...
The two pure forms of Andalusian fowls are the Blue Andalusian and the Black Andalusian. These pure forms are characterized by their distinct feather coloration and patterns.

1. Blue Andalusian: This form has a slate-blue plumage with lacing or edging of darker blue or black on the feathers. The plumage color is a result of the interaction between the black and white genes. Blue Andalusians typically have a bluish-gray beak and slate-blue legs.

2. Black Andalusian: This form has a solid black plumage throughout, without any lacing or edging. The black color is a result of the dominant black gene. Black Andalusians generally have a black beak and dark slate or black legs.

Both forms of Andalusian fowls have a medium-sized body, upright carriage, and clean, white earlobes. They are known for their elegant appearance and are often raised for exhibition purposes. Additionally, they are considered good layers of white or tinted eggs and are known for their hardiness and adaptability to various climates.
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Andalusian fowls have two pure forms — black and white. If black forms (BB) and white forms (WW) are crossed, F1 individuals appear blue coloured (BW), due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form?a)1 Black : 2 Blue : 1 Whiteb)2 Black : 1 Bluec)1 Black : 2 Blued)1 Black : 1 BlueCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Andalusian fowls have two pure forms — black and white. If black forms (BB) and white forms (WW) are crossed, F1 individuals appear blue coloured (BW), due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form?a)1 Black : 2 Blue : 1 Whiteb)2 Black : 1 Bluec)1 Black : 2 Blued)1 Black : 1 BlueCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Andalusian fowls have two pure forms — black and white. If black forms (BB) and white forms (WW) are crossed, F1 individuals appear blue coloured (BW), due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form?a)1 Black : 2 Blue : 1 Whiteb)2 Black : 1 Bluec)1 Black : 2 Blued)1 Black : 1 BlueCorrect answer is option 'D'. Can you explain this answer?.
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