Webgametophyte, in plants and certain algae, the sexual phase (or an individual representing the phase) in the alternation of generations—a phenomenon in which two distinct phases occur in the life history of the organism, each phase producing the other. The nonsexual phase is the sporophyte. In the gametophyte phase, which is haploid (having a single set of … WebJun 13, 2024 · In the simplest cases (like that of umbrella liverwort, shown below), each gametophyte inherits only one sex chromosome from the sporophyte. If a gametophyte inherits a U chromosome, it will be female and produce archegonia with eggs; if it has a V chromosome, it will be male and produce antheridia with sperm.
Chromosomes (article) Cell cycle Khan Academy
WebApr 5, 2024 · It is distinguished by the presence of two sets of chromosomes during sporophyte generation. Gametophytes, on the other hand, have only one set of chromosomes, and they are haploid. Female gametophytes lay eggs in an ovule and male gametophytes lay eggs in a grain of pollen in the flower. A fertilized egg requires … WebA parallel reduction in the number of cells comprising a megagametophyte (ovule) has also taken place: from between 256 and several thousand cells in the gymnosperms to an 8-celled megagametophyte in most of the … durham boarding school
Gametophyte Explanation and Examples - Study.com
WebAug 22, 2024 · A gametophyte is the multicellular haploid stage. This structure will look different depending on the type of plant, but it is always made up of many cells containing only one set of... WebDec 3, 2024 · The single set of chromosomes, or n, is always represented in the gametophytes and the double set of chromosomes, or 2n, is always represented in the sporophyte generation. This can be... WebFor humans there are 46 chromosomes (2n) and the gamete has 23 chromosomes (n). So, how are the chromosomes picked per set? The cell has 2 choices, is it random which one is picked? • Comment ( 3 votes) Upvote tyersome 4 years ago Yes, the selection of chromosomes is random — this is known as independent assortment. cryptococcus neoformans positive tests