The tall, white flowered plant is heterozygous for flower color. None of the above is a reasonable conclusion. Either 'c' or 'd' 16. Any of the above are possible. Only 'a' and 'c'. 17.
Color blindness is a recessive, X-linked trait.
All of their sons will be color blind. None of their children will be colorblind. Morgan's fly lab showed that genes on the same chromosome can be linked. A cross of XxYy with xxyy gave 30 recombinants out of 1000 progeny examined. A cross of XxZz with xxzz gave 40 recombinants out of 1000 progeny examined.