Hello, Saleemsafwah12. The answer would be A - It is younger than the rock layer below. This is because the deeper you go, the older the rock is, opposed to the top layer being the youngest of them all. I hope I helped!! Have a great day.
the biome that is found at the biomes is called tundra
Answer:
A variation is different to an adaptation as a variation is a difference or variety inside a species, for example a different breed of dog such as a spaniel is a variety of the dog species, whereas an adaptation is a genetic mutation that has developed in order to help an animal survive, such as giraffes having a long neck. Adaptations continue throughout the species due to natural selection.
Answer:
The transcription of the lct gene can be blocked by two kinds of mechanism.
Explanation:
The question is incomplete, here is the complete version of the question
Using your knowledge of activators and repressors, hypothesize two ways in which transcription of the LCT gene could be turned off.
The transcprition of <em>lct </em>gene could be turned off by the action of a particular repressor protein that can interact with transcription mechanism of the gene by blocking the start site of transcription (TATA box, for instance). Or also, by some other protein that can interact with the activation region of the gene that way blocking the transcription of the gene.