phase of mitosis: Interphase Prophase Metaphase Anaphase Telophase (Cytokinesis) Total Number of Cells #1 2 1 11 2 2 21 Number of Cells #2 1 3 4 3 2 15 Number of Cells #3 3 4 6 2 3 21 Total 6 8 21 7 7 57 11% 14% 37% 12% 12% 100% Based on this table, metaphase is the most prominent phase in whitefish blastula. This may be an observation error, or an error based on a low number of images to observe and compare. Based on my research, interphase should be longest by a large margin, followed by metaphase…
Title and Authors Observing Mitosis and Meiosis in plant and animal cells Rhianna Dix Introduction What does the different stages of mitosis look like in a plant versus an animal cell? How long does a cell spend in each phase of mitosis? What does crossing over look like in meiosis of Sordaria fimicola? The independent variable is the time spent in each part of mitosis and the dependent variable is the number of cells that are in each part of the cycle (i.e. Interphase, prophase, metaphase, and…
Meiosis and Genetic Diversity lab BIO LAB 028 Introduction In this lab the spores of the Sordaria fimicola, a fungus, is examined after meiosis and mitosis. During meiosis, there is always crossing over of genes between the chromosomes, allowing for genetic variation. The eight ascospores contained within an ascus are examined under a microscope and their order determined. The determination of their pattern depends on whether or not there was crossing over – if there was, they are in a 2:2:2:2…
over. Crossing over is the process where chromosomes exchange material. b. Explain why crossing over is important in meiosis. It leads to an increase in genetic diversity. 5. What are the two main differences between mitosis and meiosis? a. Mitosis one division occurs and in Meiosis two divisions occur b. In mitosis synapsis of homologous chromosomes does not occur and Meiosis synapsis of homologous chromosomes occurs. 6. a. Explain the difference between mitosis and cytokinesis. During mitosis…
organisms utilize another form of nuclear division called meiosis. In animals, meiosis is a part of gametogenesis or the production of gametes (sex cells). The gametes are sperm in the male and eggs in the female. As a result of meiosis, the daughter cells have half the number of chromosomes as the parental cell. Because crossing-over of genetic materials takes place and the chromosomes appear in various combinations in the daughter cells, meiosis contributes to the recombination of genetic material and…
overriding effect on the phenotype A gene is pleiotropic if it influences many different phenotypes Inbreeding increases the frequency of homozygotes and decreases the frequency of heterozygotes Pedigree Analysis: pg. 53-56 Pedigree- a table, chart, or diagram representing the ancestry of an individual Albinism- absence of pigment (melanin) in skin, hair, and eyes of an animal. Absence of chlorophyll in plants Pedigrees are used to identify dominant and recessive traits in human…
Code of Life Topic 1 - Genetic material Plants and animals have different cellular structures and so do different tissues and organs within the same organism. All cells have DNA, a membrane and cytoplasm. A cell's nucleus is a very important organelle. It controls all the processes within the cell. Some cells have a nucleus and some do not. All cells are divided into two large groups: cells with a nucleus, called eukaryotic cells, or simply eukaryotes; and cells without a nucleus, called prokaryotic…
For each question below you need to be able to write a paragraph answer that is clear, accurate and detailed and in many cases draw, label and explain an answer with detail, clarity and accuracy, or create a detailed accurate table. Have someone who will give you honest feedback read your paragraphs and listen to your explanations for clarity. Check your notes and book for accuracy, or have someone who knows confirm you are accurate. To confirm you have enough detail, make sure you use all of the…
Introduction (p. 520) A. Male and female reproductive systems are a series of glands and tubes that produce and nurture sex cells, and transport them to the site of fertilization. 19.2 Organs of the Male Reproductive System (p. 520; Fig. 19.1; Table 19.1) A. The male sex organs are designed to transport sperm to eggs. B. Primary sex organs (gonads) produce sperm and hormones; accessory sex organs have a supportive function. C. Testes (p. 520) 1. The testes are ovoid structures suspended…
