Answer: Solar radiation heats the ocean and causes evaporation. Without this, it could not reach the atmosphere to create clouds or precipitation
I found the exercise on the internet. Attached is a picture of the <span>statements and the bins.
Operon is not transcribed:
-trp operon: tryptophan present (tryptophan works as an inhibitor of the operon)
-lac operon: lactose absent (lactose works as the trigger for the operon)
Operon is transcribed but not sped up by positive control:
-trp operon: tryptophan absent </span>(tryptophan works as an inhibitor of the operon, when absent the operon is active)
-lac operon: lactose present, glucose present (lactose works as the trigger for the operon, but when glucose is present, the operon activity remains only at basal level)<span>
Operon is transcribed quickly by positive control:
-lac operon: lactose present, glucose absent </span>(lactose works as the trigger for the operon, but when glucose is absent, the operon activity is at its maximum activity)
Geomagnetism is the study of the dynamics of the Earth's magnetic field, which is produced in the inner core. The Earth's magnetic field is predominantly a geo-axial dipole, with north and south magnetic poles located near the geographic poles that undergo periodic reversals and excursions.
Answer:
Each time a cell prepares to divide into 2 new cells, it must make a new copy of the DNA in its chromosomes. This process is not perfect, and errors can occur that may affect genes within the DNA. Cancers can be caused by DNA mutations (changes) that turn on oncogenes or turn off tumor suppressor genes.
Explanation:
A child's gender (male or female) is determined by the chromosome that the male parent contributes.
Females have XX sex chromosomes.
Males have XY sex chromosomes.
A male infant results if the male contributes his Y chromosome while a female infant results if he contributes his X chromosome.