A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

What are the first two substages of Prophase I of Meiosis I?

Best Answers

Prophase 1 of Meiosis is the first stage of meiosis and is defined by five different phases; Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis (in that order). read more

In this first substage of prophase I, the chromosomes have appeared within the nuclear envelope (shown in the diagram at right as a tan circle with a brown border), but are not yet fully condensed. In the diagram the two chromosomes of paternal origin are indicated in red, those of maternal origin, in blue. read more

Prophase-I of Meiosis has 5 sub stages: Leptotene; Zygotene; Pachytene; Diplotene; Diakinesis; I'll provide you a simple mnemonic to help you remember the stages : L azy Z ebra P ushed D (the) D onkey. Leptotene : In this stage, thin stands of chromatin start to condense into threads of chromosomes. Zygotene : In this stage chromatin starts forming pairs. read more

The end result is production of four haploid cells (n chromosomes, 23 in humans) from the two haploid cells (with n chromosomes, each consisting of two sister chromatids) produced in meiosis I. The four main steps of meiosis II are: prophase II, metaphase II, anaphase II, and telophase II. read more

Related Facts

Image Answers

Further Research