Question

question 19
what is a possible function of introns in eukaryotic dna?
○ to act as the coding part of the gene
○ to increase recombination of gene segments by crossing over
○ to break up the gene

question 20
2 pts
which best describes genotype and phenotype, respectively?
○ the location of the alleles and the overall condition of the organism
○ the type of genetic makeup and the type of phenomena that the organism experiences
○ the structure of the alleles and the outward appearance of the organism

Explanation:

Question 19

• Option 1: Introns are non - coding regions, so they can't be the coding part of the gene.
• Option 2: Introns can increase recombination of gene segments during crossing over as they provide more sites for genetic recombination events.
• Option 3: The function of introns is not to simply "break up the gene" in a non - functional way; they have regulatory and recombination - related roles.

• Option 1: Genotype is not about the location of alleles, and phenotype is not the overall condition of the organism in this sense.
• Option 2: Phenotype is not about the type of phenomena the organism experiences.
• Option 3: Genotype refers to the genetic makeup (the structure/type of alleles an organism has), and phenotype refers to the outward appearance (and other observable traits) of the organism.

Answer:

to increase recombination of gene segments by crossing over

Question 20