Amutation occurs in an operon that prevents the transcription factor from binding to its recognition site on the dna. in which type(s) of gene regulation would this mutation result in constitutive expression of the structural gene? select one or more: negative inducible negative repressible positive inducible positive repressible

In order to clone adult animals, scientists typically begin with a(n)

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area