D. Fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons.
Phases of meiosis<span>. In many ways, </span>meiosis<span> is a lot like mitosis. ... Since cell division occurs twice during </span>meiosis<span>, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four </span>stages<span>: </span>prophase<span>, metaphase, anaphase, and telophase.</span>
The unicellular and multicellular organism are different in asexual and sexual mode of reproduction.
The reproduction is the phenomenon which involves the production of an offspring by particular individuals or individuals to propagate there species. Reproduction are of two types:
1. Asexual reproduction: In asexual reproduction, they does not involve the fusion of gametes. The unicellular organism reproduce mainly by binary fission. In this, a single cell divides into two daughter cell. The daughter cell completely resembles their parent. It involves only one parent.
2. Sexual reproduction: In sexual reproduction, there is a fusion of gametes that brings changes in genetic combination. The germ cell undergoes meiosis that produces haploid gametes that fuse to form new individuals. It involves either one or two parents.
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They use Punnett squares to determine the sex traits or possibilities of having a boy or girl. They also determine the sex linked trait or the genes.
