What would be the percentage of the non singing trait in female birds in Generations 4 and 5 if this pattern continues?? Please help

if someone had the list of traits you provided

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

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answer; /// the shaft of the hair consists of dead cells;