Give short note on merogamy,Isogamy
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Answer:
Isogamy is a form of sexual reproduction that involves gametes of similar morphology (generally similar in shape and size), found in most unicellular organisms. Because both gametes look alike, they generally cannot be classified as male or female. ... Isogamous species often have two mating types.
Answer:
The creation of gametes, which vary structurally and in size from vegetative cells of the same organism (obsolete). Merogony, namely the creation of gametes or gamonts, is used later.
Explanation:
Isogamy is the union of gametes with similar shapes and sizes. The union of gametes with different sizes and morphologies is known as heterogamy.
Most unicellular eukaryotes use isogamy, a kind of sexual reproduction that uses gametes with the same morphology (gametes that are identical in size and shape). Gametes are typically unable to be recognised as male or female because they both seem similar. Instead, it is claimed that organisms undergoing isogamy have many mating types, most notably the "+" and "strains.
Isogamy translates to "equal marriage," which alludes to the equal resource input of both gametes to a zygote. In the year 1887, the word "isogamous" was first used.
Features of isogamous species
Two mating styles are common in isogamous animals. Some isogamous species have more than two ways of mating, although most have less than 10. A species may have thousands of different mating types in certain unusual circumstances. When gametes from two different mating types combine to create a zygote, fertilisation occurs in every situation.
It is widely acknowledged that isogamy was the initial step in the evolution of sexual reproduction and is an ancestral condition for anisogamy. In various lineages of plants and animals, isogamous reproduction separately developed into anisogamous species with gametes of the male and female kinds and then into monogamous species with a female gamete significantly bigger than the male and immobile. The physical limitations on the processes by which two gametes combine as necessary for sexual reproduction may have been the driving force behind this pattern.
Although it is plausible that isogamy is evolutionarily stable in multicellular species, isogamy is the rule in unicellular eukaryote species.
Isogamy refers to when two male and female gametes have an appearance that is too similar to classify. We refer to them as homogametic or isogametes. Example: Algae Cladophora
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