PDF-Sexual colouration and sperm traits in guppies T

E P ITCHER F H R ODD AND L R OWE Department of Zoology University of Toronto 25 Harbord St Toronto Ontario M5S 3G5 Canada Received 30 January 2006 Accepted 9 August 2006 The relationships among the area hue saturation and brightness of orange co. Commonly used sperm viability assays em ploy mixtures of two or three dyes including fluorescein di acetate derivatives rhodamine 123 and reduced nucleic acid stains which target a variety of cellular components 14 Acridine orange which fluoresces a Predation Threat . by Cichlids . (. Petenia. . splendida. ) . on Reproduction in Guppies . (Poecilia reticulata).  . Introduction. Guppies . (Poecilia reticulata) . are a good model organism to study mechanisms of reproduction because they are livebearers with internal fertilization, they have a short gestation, and are capable of producing large . By. . Jeevan. a. nd Nathan. The Something’s Fishy Pet Shop has:. 8 yellow guppies. 3 times as many orange guppies as yellow guppies. How many orange guppies do they have?. Write an equation to represent this problem. Use a symbol for the unknown number. Then solve. 8x3=? 8x3=24. By: Sophie, Zoey , and . Meira. Guppies and their Problems . The first fishy problem is…. The Something’s Fishy Pet Shop has. * Eight yellow guppies and. . * 3 times as many orange guppies as yellow guppies.. 1. Make a Venn Diagram. 2. Asexual Reproduction. Sexual Reproduction. Both. Types of reproduction in living organisms. Asexual Reproduction. Requires only one parent. Offspring have 100% the same chromosomes as the parent.. By: Sophie, Zoey , and . Meira. Guppies and their Problems . The first fishy problem is…. The Something’s Fishy Pet Shop has. * Eight yellow guppies and. . * 3 times as many orange guppies as yellow guppies.. Selection on Sperm in . Selfing (. Caenorhabditis elegans) . and . Out-Crossing (. C. . . remanei) . Mating . Systems. Janice. . M. . Hodges. 1. , . Katja. Kasimatis. 2. , Patrick C. Phillips. 2. 1. Chapter One Review. HENRY HUGGINS. Chapter One. For today’s class…. make sure you have your completed study guide page and a pen or pencil to correct with.. Based on the information in Chapter One, . 1. Asexual Reproduction. Requires only one parent. Offspring have 100% the same chromosomes as the parent.. In other words, the offspring are exact “clones” of the parent.. 2. Asexual Reproduction. Early Development. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. A. B. C. D. E. Plasma membrane. Outer . acrosomal. membrane. Acrosome. Inner . acrosomal. membrane. Nucleus. Proximal . centriole. Rest of the distal . coloured. . . Colouration. is one of the most common phenomena found among the fishes.. The enormous range of . colours. and patterns that produced in fishes are generally related to their habits.. 3.2 Sexual Reproduction & the Diversity of Life. Joining or fusing two gametes is called . fertilization. This will create a . Zygote. first . diploid. . (46 chromosomes). . cell of the . offspring. The presence of birefringence is the expression of an organized and very compact texture that characterizes normal sperm nuclei, acrosomes, and motile tails.. On the basis of these considerations, the application of polarization microscopy to the ICSI technique has been proposed as a novel tool for sperm selection, based on the properties of birefringence that human spermatozoa naturally possess.. Recall that sexual reproduction occurs when one haploid . –. the . sperm. . –. fuses together with. another haploid – the . egg. . . Each haploid contains . 23. chromosomes.. When they combine they produce a .