The answer is “Variation that decrease reproductive success are more likely to be passed on.”
Vertebrae are the scientific term for the backbones.
All backbones are backbones... right? :'D
However, the vertebrae are only a bone GROUP; there are other types of bones like joints, shafts and etc which don't come under the vertebrae clssification.
The three different skeletal designs that give a body its shape are:
Hydrostatic skeleton-contraction of muscles occur for changing cooler, due to which movement is caused.
Exoskeleton-external skeleton composed of calcium carbonate and chitin
Endoskeleton-body's internal system made of hard mineralised components.
The answer is C. Although the F1<span> generation will all show the dominant trait, the offspring will all be heterozygous and increase chances of future variation. </span>
