Which of the following are examples of heterochromatin? select all that apply. select all that apply. centromeric dna repetitive dna telomeric dna

The heterochromatin refers to a condense packed form of DNA and is categorized into two types as facultative and constitutive heterochromatin. These kinds of heterochromatin perform an essential function in the expression of genes.  

The distinguishing characteristic of heterochromatin is the prevalence of genetically inactive sequences that are called satellite sequences. Therefore, it generally comprises the repetitive sequences of DNA. The distinct examples of heterochromatin are telomere, centromere, and repetitive DNA. Hence, all the given options are correct.  

the bullets go in this order.

4, 1, 3, 5, 2

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.