Title: A Moss Life Cycle: Dominant Gametophyte - Video & Lesson Transcript | Study.com
Headings: A Moss Life Cycle: Dominant Gametophyte
A Moss Life Cycle: Dominant Gametophyte
Lesson Transcript
Introduction to Mosses
Review of Alternation of Generations
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A Moss Life Cycle: Dominant Gametophyte
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0:05 Introduction to Mosses
0:56 Review of Alternation…
2:28 The Haploid Stage
3:30 The Diploid Stage
4:26 Lesson Summary
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Review of Alternation of Generations
Now that we know a little bit about these non-vascular plants, let's quickly review the concept of alternation of generations before looking at this process in mosses. Alternation of generations is a life cycle that includes both diploid and haploid multicellular stages. Remember that 'diploid' means 'two sets of chromosomes' and is commonly abbreviated as 2 N, where the N stands for 'chromosomes.' In diploid cells, one copy of the chromosomes comes from each parent. For example, in humans you get one copy of chromosomes from your dad and one copy of chromosomes from your mom. The same idea is found in plants. Each diploid cell contains one copy of chromosomes from the male parent and one copy of chromosomes from the female parent. '