Manus (anatomy) The manus (Latin for hand) is the zoological term for the distal portion of the fore limb of an animal. In tetrapods, it is the part of the pentadactyl limb that includes the metacarpals and digits (phalanges). During evolution, it has taken many forms and served a variety of functions.
A cross between parents that differ in one trait is called monohybrid cross.
Explain how a testcross can be used to determine if an individual with the dominant phenotype is heterozygous. cross PP or Pp with recessive pp, if both purple and white phenotypes appear among the offspring, then the purple-flowered parent must be heterozygous.