LABORATORY REVIEW
MITOSIS AND MEIOSIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Metaphase I and Anaphase I
|
|
|
Prophase II
|
|
|
Prophase I
|
|
|
Metaphase I and Anaphase II
|
Detailed explanation-1: -Tetrad formation occurs during the zygotene stage of meiotic prophase. It is a meiotic-specific process. Homologous chromosomes are DNA fragments within a diploid organism of the same size one from each parental source.
Detailed explanation-2: -During prophase I, the homologous chromosomes condense and become visible as the x shape we know, pair up to form a tetrad, and exchange genetic material by crossing over.
Detailed explanation-3: -Prophase: In this stage, homologous chromosomes pair up to form tetrads . The formation of tetrads is also called synapsis.
Detailed explanation-4: -Between prophase I and metaphase I, the pairs of homologous chromosome form tetrads. Within the tetrad, any pair of chromatid arms can overlap and fuse in a process called crossing-over or recombination. Recombination is a process that breaks, recombines and rejoins sections of DNA to produce new combinations of genes.