The correct genotypes of the parents are Ttbb male and the TTBb female and the <span>TtBb for the offspring. The image below presents a cross of these two genotypes </span>Ttbb and TTBb. As you can see marked with green, 1/4 of the offspring would have the TtBb and be heterozygous for both traits.
refers to a group of more than 30 genetic diseases that cause progressive weakness and degeneration of skeletal muscles used during voluntary movement.
