Question

1. The failure of monosomic individuals to survive is most closely connected with which of the following terms?

		X-inactivation
		gene duplication
		haploinsufficiency
		gene redundancy
		inversion

2. Animals can tolerate trisomies and polyploid conditions better than plants.

True

False

3.

A transgenic organism __________.

		has been changed from one species into another
		has a gene from another species inserted in its DNA
		has been cloned from an adult cell
		is found only in crop plants

Answer 1

1.- This occur due to haploinsufficiency, it refers to the consequent loss of function of one single allele when in absence of another copy of the allele.

2.- That is false, animals tend to develop limiting conditions or even lethality when trisomies and polyploidies appear, on the other hand many plant species have polyploidies and trosomies without showing any disadvantageous condition

3.- Transgenic refers to the reception of foreign genes, then the answer is: has a gene from another species inserted in its DNA