Chapter 1: Intro Independent Variable - variable you deliberately change during an experiment Theory - explanation based on a large number of experiments Hypothesis - educated prediction of cause and effect - what you test in an experiment Control - a zero or set form of the independent variable Dependent - variable you measure because you think it could change 7 characteristics: order‚ regulation‚ growth and development‚ energy processing‚ response to the environment‚ reproduction‚ evolutionary
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human activities in and out of the fields lead to high likelihood of seed escape as well (Kausch et al. 2010). Wang et al. (2011) suggested three other possible reasons: genetic overlap between goosegrass ecotypes‚ exchange of germplasm resources and ploidy. Goosegrass
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Unfavorable environmental conditions may induce flowering plants to reproduce by clonal growth more frequently than sexual reproduction‚ and such environmental conditions can be temporary or long lasting (HONNAY and BOSSUYT‚ 2005). A plant species can form remnant population when stages of the life-cycle persist over time due the failure to complete the whole life cycle (Eriksson 2000). These remnant populations may play an important ecological role for ecosystem resilience‚ due to positive interactions
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Anchorage Dependent Animal Cell Culture Animal Cell Culture: Its origin and importance Prior to discussing about the anchorage dependence of animal cell cultures‚ let us first briefly discuss animal cell culture in general and its importance. Animal cell culture has a history of over 100 years when the first attempts to grow cells were made by Ross Harrison who was able to show the development of nerve fibres from frog embryo tissue cultured in a blood clot. Physiologist Alexis Carrel was able
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Introduced species have had a drastic effect on Australian agriculture’s production and economy‚ and continue to pose an ever-growing threat. Invasive plant species are highly adaptable‚ resistant to control and spread aggressively. Methods of controlling these invasive species can often be expensive‚ time-consuming and controversial. Introduced plants can have drastic effects on natural ecosystems by smothering native vegetation‚ degrading creeks and rivers‚ and spreading diseases. Sometimes introduced
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Mitosis and Meiosis Purpose To understand the cell cycle and mitosis and how these two processes function within an organism. To understand meiosis and how this process produces gametes. Mitosis All cells in your body complete a cell cycle in which they grow‚ divide and‚ eventually‚ die. The cell cycle consists of four phases: G1‚ S‚ G2‚ and M (Figure 1). Each phase is associated with a specific cellular function: typically growth‚ synthesis‚ and division. The G1‚ S‚ and G2 phases comprise
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Thursday Lecture – Cereal Grains Reading: Textbook‚ Chapter 5 The topic of class for this week will be members of the grass family‚ which as cereal crops provide more than half of all calories that humans consume. Members of the family are used in many other ways by people‚ including as forage grasses for livestock. 1 What is a Cereal? Ceres – Roman goddess of agriculture (in Greek‚ Demeter). Myth: mother of Persephone‚ who was kidnapped by Hades; Ceres went on strike to demand
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The cell cycle‚ or cell-division cycle‚ is the series of events that take place in a cell leading to its division and duplication that produces two daughter cells. In cells without a nucleus‚ the cell cycle occurs via a process termed binary fission. In cells with a nucleus‚ the cell cycle can be divided in three periods: interphase—during which the cell grows‚ accumulating nutrients needed for mitosis preparing it for cell division and duplicating its DNA—and the mitotic phase‚ during which the
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Genomic Techniques in Ecological Genomics Ecological genomics is “an interdisciplinary field that seeks to understand the genetic and physiological basis of species interactions for evolutionary inferences” (Renn‚ Siemens 2010). Here I will focus on the genomic techniques that can be used to answer ecological genomic questions. An overarching goal in the field of ecological genomics is to find the genes that matter in species interactions‚ and then to study the ecological consequences
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CHAPTER 2 SEXUAL REPRODUCTION IN FLOWERING PLANTS 2.1 2.2 2.3 2.4 2.5 Flower – A Fascinating Organ of Angiosperms Pre-fertilisation : Structures and Events Double Fertilisation Post-fertilisation: Structures and Events Apomixis and Polyembryony Are we not lucky that plants reproduce sexually? The myriads of flowers that we enjoy gazing at‚ the scents and the perfumes that we swoon over‚ the rich colours that attract us‚ are all there as an aid to sexual reproduction. Flowers do not exist only
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