Describe the structure of genetic material in terms of chromosomes, genes, alleles, and dna

Each chromosome contains a linear DNA molecule, closely associated with histone proteins. DNA is genetic material, made of only four different nucleotides arranged in a double helix. ... Hence, several genes are located on same chromosome. Homologous chromosomes carry same genes, generally in same order.

the titanic would be the correct answer

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.