Topic 1: The continuity of life is based on heritable information in the form of DNA. In a short essay (100150 words), explain how chromosome behavior during sexual reproduction in animals ensures perpetuation of parental traits in offspring and, at the same time. genetic variation among offspring. Write an example and explain using at least two key points below for the question above: - Genes are stretches of DNA in chromosomes that encode traits and are passed on from parent to olfspring - Chromosome behavior during sexual reproduction accounts for both similarity and variation among offspring - Inheritance of genes accounts for offspring exhibiting traits similar to those of each parent. - In sexual reproduction, meiosis alternates with fertilization. - Crossing over and independent assortment of chromosomes during meiosis lead to genetic variation among gametes. - Random fertilization increases the genetic yariation among diploid offspring..

1. Topic 1: The continuity of life is based on heritable information in the form of DNA. In a short essay
(100150 words), explain how chromosome behavior during sexual reproduction in animals
ensures perpetuation of parental traits in offspring and, at the same time. genetic variation among
offspring. Write an example and explain using at least two key points below for the question
above: - Genes are stretches of DNA in chromosomes that encode traits and are passed on from
parent to olfspring - Chromosome behavior during sexual reproduction accounts for both similarity
and variation among offspring - Inheritance of genes accounts for offspring exhibiting traits similar
to those of each parent. - In sexual reproduction, meiosis alternates with fertilization. - Crossing
over and independent assortment of chromosomes during meiosis lead to genetic variation among
gametes. - Random fertilization increases the genetic yariation among diploid offspring.