QUESTIONS AND ANSWERS SECTION A: SIMILARITIES‚ DIFFERENCES‚ AND DEFINITIONS Gametes are mature haploid reproductive cells that unite to form a zygote that develops into a new individual. Gametes are also called sex cells. An egg or ovum is a haploid female reproductive cell or gamete whereas a sperm is a male haploid reproductive cell. A zygote is the initial cell that is formed as a result of the union of a male and a female gamete by means of sexual reproduction. The two haploid cells merge
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in large quantities can lead to the development of male gametophytes (Hickock & Warne). Mitosis took place between the first and second week as well as the second and third week observations. The spores underwent mitosis to form gametophytes. The gametophytes then underwent mitotic division to form two distinct types of gametophytes. The zygote also went through mitosis to develop the sporophyte. Mitosis is the process that creates haploid gametes‚ because it ensures the haploid gametes do not
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cytoplasm adjacent to the nucleus that contains the centrioles and serves to organize microtubules. 2. How does the process of mitosis compare with meiosis? In mitosis‚ each of the two new cells (called the daughter cells) resulting from the cell division receives the same number of chromosomes that were present in the precursor cell (called the parent cell). In meiosis‚ the number of chromosomes is reduced so that the daughter cells receive only half of the chromosomes possessed by the parent cell
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Unit 2 Lecture Study Guide 1) What are the parts of an atom? Where are the subatomic particles found? The atoms are the smallest units of matter with their own chemical characteristics. The atoms are divided into 2 parts. The first part is the central nucleus and the electron cloud. The central nucleus contains very heavy particles and the electron cloud contains very light moving particles. The subatomic particles are the protons‚ neutrons‚ and the electrons. They are located
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Determining the Crossover Frequency in Sordaria fimicola Introduction Meiosis is an important part of the life cycle that gives rise to the genetic variation in offsprings. Meiosis in fungi differs from those in plants and animals. Fungi are composed of hyphae‚ which are tubules that make up the frame. These hyphae together form a clump or a mat that is the mycelium (Campbell‚ 637). The hyphae are key to fungus reproduction. Typically fungi produce large amounts of spores through either sexual
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time a nerve impulse is passed down the axon‚ and is important as it allows the action potential to be passed along the axon. Examples of biological cycles at a cellular level include the cell cycle‚ mitosis and meiosis. Most eukaryotic cells follow this process‚ which includes a growth stage‚ mitosis or nuclear division‚ and cytokinesis. Throughout interphase‚ the cell undergoes growth and metabolic activities. Interphase can be further broken down into G1 (where normal cell functions occur‚ as
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1. What organic molecules make up the largest part of a cell membrane? a. Lipids 2. Which of the following is presumed to have been engulfed by an ancestral eukaryote and became a eukaryote organ? b. Chloroplast 3. Which of the following is correct about mitochondria? c. Most cells plants contain a mitochondria 4. Horse eating hay is an example of? d. a consumer eating a producer 5. Structure of ATP is MOST similar to the structure of? e. RNA molecules
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“Meiosis and Genetic Diversity in the Model Organism‚ Sordaria fimicola” November 4‚ 2013 Biology 110- Basic Concepts and Biodiversity Fall 2013 I. Introduction The Earth is home to various forms of life contributing to the endless biodiversity that we see in our daily lives. In environments around the world there are distinct correlations between the environment and adaptations acquired by the organisms that live there. It has been shown that these adaptations
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a sporophyte (thallus or plant)‚ which is genetically diploid. A haploid plant of the gametophyte generation produces gametes by mitosis. Two gametes (originating from different organisms of the same species or from the same organism) combine to produce a zygote‚ which develops into a diploid plant of the sporophyte generation. This sporophyte produces spores by meiosis‚ which germinate and develop into a gametophyte of the next generation. This cycle‚ from gametophyte to gametophyte‚ is the way in
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Notes: Anatomy & Physiology 1. Cells A cell is the basic‚ living‚ structural‚ and functional unit of the body. Cytology: the study of cells A generalized view of the cell 3 main parts of the cell: Plasma membrane‚ cytoplasm and nucleus. * Plasma (cell) membrane: * Outer‚ limiting membrane separating the cell `s internal components from the extracellular materials and external environment. * Cytoplasm (formed or molded): * Consist of all the cellular contents between
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