'Chromosomes condense' diaporamas de présentation

2.41k views • 228 slides

G enetics

G enetics. Mitosis & Meiosis. Review p 45-47 A. The Cell Cycle 1 . The dividing cell goes through a cycle of events known as the cell cycle 2 . Cycle divided into interphase and mitosis B . Interphase 1 . Period of DNA replication in preparation of nucleus dividing

672 views • 52 slides

Starter Monday Left Side

Starter Monday Left Side. What did you eat for breakfast? Why do we have to eat food? What happens when we do not have enough to eat?. Starter Tuesday Left Side. 1. What is the purpose for chlorophyll found in the chloroplast? In the Photosynthesis Rap, what do they mean by the phrase,

592 views • 48 slides

Mitosis & Meiosis

941 views • 44 slides

Meiosis

Meiosis. IB Biology. Match up the key words to their definitions and copy them into your notes!. Gene locus ( loci ). Homologous pair. Diploid. Gamete. Allele. Haploid. n=23. human sex cell. sperm. n=23. n=23. 2n=46. haploid (n). n=23. n=23. diploid (2n). n=23. meiosis I.

719 views • 42 slides

1.01k views • 39 slides

Mitosis - Opener

Mitosis - Opener. Where did we come from? What causes cancer? What happens when we get old?. What is DNA?. Deoxyribonucleic acid, (DNA) is the hereditary material in humans and all other living organisms. Information is passed from cell to cell through DNA. DNA is the blueprint of life!.

484 views • 36 slides

Biology

Biology. The Cellular Basis of Inheritance. Why Do Cells Divide?. Cell Division is the splitting of a single cell into 2 cells . 3 life processes occur: Growth : this is the increase of cell in size . Differentiation is the specialization in cells .

465 views • 31 slides

Chapter 11

Chapter 11. Meiosis and Sexual Reproduction. Standard 3. Students know and understand the characteristics and structure of living things, the processes of life, and how living things interact with each other and their environment.

380 views • 29 slides

Meiosis

519 views • 26 slides

Meiosis Formation of Gametes (Eggs & Sperm)

Meiosis Formation of Gametes (Eggs & Sperm). Facts About Meiosis. Preceded by interphase which includes chromosome replication Two meiotic divisions --- Meiosis I and Meiosis II Called Reduction- division Original cell is diploid (2n) Four daughter cells produced that are haploid (1n).

566 views • 26 slides

Meiosis

417 views • 25 slides

Unit 3

377 views • 24 slides

MEIOSIS

MEIOSIS. 10.1 HL. Meiosis . Meiosis has a number of overall functions Reduce the chromosome number by half from diploid(2n) to haploid(n). Each gamete nuclei will contain one chromosome from every homologous pair. Increase genetic diversity.

377 views • 22 slides

Lesson Overview

Lesson Overview. 12.3 DNA Replication. THINK ABOUT IT. Before a cell divides, its DNA must first be copied. How might the double-helix structure of DNA make that possible?. Copying the Code. What role does DNA polymerase play in copying DNA?. Copying the Code.

361 views • 22 slides

Chromosome structure

Chromosome structure. Chromosomes. Example - an organism is 2n = 4. Chromosomes 1 & 2 are homologous chromosomes Chromosomes 3 & 4 are homologous chromosomes Chromosomes 1 & 3 came from the mother Chromosomes 2 & 4 came from the father. Life cycle. Cell division - Mitosis.

495 views • 20 slides

Mitosis and Asexual Cell Division

Mitosis and Asexual Cell Division. John Ireland, Ph.D. Bacterial Binary Fission. Eukaryote Chromosome Number. Haploid vs. Diploid Mammals are diploid with haploid sex cells (exception: Plains Vischacha Rat of Argentina)

225 views • 15 slides

Mitosis 2

Mitosis 2. James Martin MS Mrs. Anna Ward. Do Now!!! Page 9. PMAT CHEER !!!! Prophase makes the chromosomes condense Metaphase means the middle, which makes a lot of sense Anaphase brings each part way out wide Telophase the two new nuclei form on each side

202 views • 9 slides

CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES

Section B: Meiosis ???????? ???????. CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES. Meiosis ( Reduction Division ) ???????? ????????? R educes chromosome number from diploid to haploid :. Many steps of meiosis resemble steps in mitosis.

224 views • 9 slides

Mitosis vs. meiosis

Mitosis vs. meiosis. Prophase vs. prophase i. similarities. differences. Homologous chromosomes pair up Crossing-over occurs. Nuclear membrane disappears Spindle forms Chromosomes condense and become visible. Metaphase vs. metaphase i. similarities. differences.

243 views • 9 slides