Why was it neccesary to sex the flies? Hint: On which chromosome is the white mutation carried?

German cockroaches, bulging eyes, bu, are recessive to normal eyes, bu , and curved wings, cv, are recessive to straight wings, cv . both traits are encoded by autosomal genes that are linked. a cockroach has genotype bu bu cv cv, and the genes are in repulsion. which set of genes will be found in the most common gametes produced by this cockroach?

Ineed to know why d is the correct answer asap

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.