Sex cells - PowerPoint PPT Presentation
Organelles
Organelles. The nucleus contains a eukaryotic cell’s genetic library. The nucleus contains most of the genes in a eukaryotic cell Some genes are located in mitochondria and chloroplasts The nucleus is separated from the cytoplasm by a double membrane.
By libitha
B5 Revision
B5 Revision. Growth and Development. An accelerated revision resource A.Blackford. Revision IS important. WARNING This PowerPoint is not a substitute for active revision using notes, the workbook and revision guide. You also need to do plenty of past papers to get exam practice.
By Jimmy
Gregor Mendel
Gregor Mendel. The basic laws of heredity were first formed during the mid-1800’s by an Austrian botanist monk named Gregor Mendel. Because his work laid the foundation to the study of heredity, Mendel is referred to as “The Father of Genetics.”. Mendel’ Pea Plants.
By Rita
Alternation of generation
Alternation of generation. Chromosomes by numbers. Chromosomes by numbers. Body cells – 23 pairs of single stranded chromosomes Germ cells – 23 pairs of single stranded chromosomes Interphase Body cells – 23 pairs of double stranded chromosomes
By libitha
Genetics and Heredity
Genetics and Heredity. What is heredity?. The passing on of characteristics from parents to offspring. Genetics is the branch of biology that studies heredity the characteristics that are inherited are traits. Father of Modern Genetics. Gregor Mendel – Augustinian Monk in 1856 to 1863
By omer
Mendel and Meiosis
Mendel and Meiosis. Chp 10 Pp. 252-279. Contents. 10-2 Meiosis 10-1 Mendel. Chromosome. Rod shaped structures made of DNA and proteins Carrier of genetic material Located in the nucleus Copied and passed from generation to generation. Chromosomes.
By paul2
Characteristics of Living Things
Characteristics of Living Things. What is biology?. The study of living things All living things share certain characteristics. 1. Made of 1 or more cells. Unicellular (one cell) - ex. Bacteria Multicellular (many cells) - ex. Animals, plants. 2. Need energy to survive.
By lotus
Comparison of Mitosis and Meiosis
Mitosis Purpose: growth and repair Division: 1 Parent cell: 2n,diploid Daughter cell: 2 2n-identical to parent cell 5. Somatic cells. Meiosis Purpose: reproduction Division: 2 Parent cell: 2n diploid Daughter cells: 4
By Lucy
Demonstrate understanding of biological ideas relating to genetic variation.
Demonstrate understanding of biological ideas relating to genetic variation. Science A.S. 1.9 2014. The Structure of DNA. DNA (deoxyribonucleic acid) is found in the nucleus of living cells Its structure is described as a double helix. Nucleotide Bases. There are four bases
By brilliant
Fungi
Fungi. Fungal Characteristics and Human Fungal Pathogens. Fungal Taxonomy. Domain Eukarya Kingdom Fungi [True Fungi = Eumycota] Phylum Zygomycota Phylum Basidiomycota Phylum Ascomycota Phylum Chytridiomycota Phylum Deuteromycota [Imperfect Fungi]. Fungal Taxonomic Names . Phylum
By glenys
MEIOSIS
MEIOSIS. Organisms that reproduce Sexually are made up of two different types of cells. Somatic Cells are “body” cells and contain the normal number of chromosomes ….called the “Diploid” number (the symbol is 2n ). Examples would be … skin cells, brain cells, etc.
By dallon
Diploid to Haploid
Diploid to Haploid. Donna Huffman Biology Lab Instructor Calhoun Community College. Introduction. All living things must reproduce to survive. All body or somatic cells reproduce by mitosis which is simple cellular reproduction.
By camila
Mitosis and Meiosis
Mitosis and Meiosis. Higher Biology. Mitosis and Meiosis. Mitosis: - division of somatic (body) cells Meiosis - division of gametes (sex cells). Mitosis. Interphase Prophase Metaphase Anaphase Telophase. I nterphase. Interesting things happen! Cell preparing to divide
By justine
The Work of Gregor Mendel
The Work of Gregor Mendel . Section 11–1. GENETICS. The scientific study of heredity is called . Genetics. Gregor Mendel’s peas. b. When pollen fertilizes an egg cell, a seed for a new plant is formed. c. Pea plants normally reproduce by self-pollination.
By dacian
9.1 All cells come from existing cells
9.1 All cells come from existing cells. Objectives Describe how cell reproduction contributes to repair and to growth. Contrast the two main ways that organisms reproduce. Key Terms asexual reproduction sexual reproduction.
By israel
Cell Division
Cell Division. Mitosis, meiosis and cytokinesis. Cell Division. Results in the formation of two identical “daughter” cells Each daughter cell will be roughly ½ the size of the parent cell Before the cell divides, the DNA of the cell must be copied and separated (mitosis)
By lore
Mendel’s Legacy
Mendel’s Legacy. Genetics is everywhere these days – and it will continue as a dominant force in biology and society for decades to come. . Wouldn’t it be nice if people understood it better?. The Fundamental Question.
By vidal
MEIOSIS
MEIOSIS. Reduction-Division Genetic Recombination. Meiosis. The form of cell division by which GAMETES , with HALF the number of CHROMOSOMES , are produced. DIPLOID (2n) HAPLOID (n) Meiosis is SEXUAL reproduction. TWO divisions ( MEIOSIS I and MEIOSIS II ). Meiosis.
By kay
Chapter 3
Chapter 3. The Biological Basis of Life. Chapter Outline. The Cell DNA Structure DNA Replication Protein Synthesis What is a Gene? Cell Division: Mitosis and Meiosis. Cells. Basic units of life. Complex life forms have billions of cells. An adult human= as many as 1,000 billion cells.
By rad
Reproductive System
Reproductive System. Jeopardy Test Review Game. Where are sperm produced?. testes. What part of the male anatomy surrounds and protects the testes?. scrotum. What is the name of the tubes that connect the testes to the penis?. vas deferens.
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