ORFs in eukaryotes are hard to identify from genomic DNA because: Group of answer choices
eukaryotic genes are sometimes methylated
they are disrupted by introns
eukaryotic genes code for much larger proteins
eukaryotic genes have extensive histone modifications

They are disrupted by introns

Explanation:

Open reading frames are defined as the base pair sequence between the start and stop codon in an mRNA. The open reading frames are important from the translation point of view as this is the sequence that can be translated into proteins.

In eukaryotes, the identification of an open reading frame is very difficult as the sequence contains the introns or non-coding sequence which makes it difficult. Therefore the cell must remove these introns from the sequence.

Thus, the selected option is correct.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.