www.bbcnoun.com.ng The concept wherby chromosomes or chromosomes regions are out of phase in respect to the coiling cycle and staining properties is refered to as _____. Hetropyenosis The outer covering or sheath of a chromosome is known as Pellicle The largest chromosomes occur in ______. Trillium species The chromatin fibres resemble beads which approximately __________ diameter 100 Ao The longest chromosomes are longer than ______. 30nm The chromatins that stain very darkily are called _____. Hetrochromatin The frequency of crossing over would be higher if Two genes are far apart on a chromosome A chromosome having two centromeres is known as Dicentric The type of chromosomes that lack a centromere is known as Acentric The following terms can be used for qualitative description of chromosomes except ______. Intermidiate