'Homologous chromosomes separate' presentation slideshows

Do Now

1.11k views • 88 slides

Mendelian Genetics and Meiosis

946 views • 77 slides

Genes, Chromosomes and DNA

Genes, Chromosomes and DNA. (Chapter 2). The structure of DNA. Composed of 4 nucleotide bases, 5 carbon sugar and phosphate. Base pair = rungs of a ladder. Edges = sugar-phosphate backbone. Double Helix Anti-Parallel. Figure 2. 21. The structure of DNA. DNA Replication.

606 views • 55 slides

Cross-Dressing or Crossing-Over: Sex Testing of Women Athletes

639 views • 52 slides

Meiosis and Sexual Life Cycle

Meiosis and Sexual Life Cycle. Chapter 13. Heredity (inheritance) - transmission of traits from 1 generation to next. Variation - siblings differ from 1 another. Genetics - study of heredity and variation. http://www.mssm.edu/genetics/fabry/images/figure1b.gif.

621 views • 51 slides

MEIOSIS

MEIOSIS. 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.

981 views • 44 slides

Cell Reproduction and Division Ch 8

Cell Reproduction and Division Ch 8. Chromosomes. Chromosome : DNA wrapped up w/ histones (proteins) = organized Chromatin : uncoiled chromosome= unorganized DNA. Chromosome #. All species have their own characteristic # of chromosomes in each cell. Chromosome Number.

505 views • 38 slides

Unit 3 - Genetics

457 views • 32 slides

Systems of Cell Reproduction

Systems of Cell Reproduction. Four events occur before and during cell division: A signal to reproduce must be received. Replication of DNA and vital cell components must occur. DNA must be distributed to the new cells. The cell membrane or cell wall must separate the two new cells.

389 views • 30 slides

Human body cells have 46 chromosomes

430 views • 29 slides

MEIOSIS AND SEXUAL LIFE CYCLES

Section B: The Role of Meiosis in Sexual Life Cycles. MEIOSIS AND SEXUAL LIFE CYCLES. http://www.sumanasinc.com/webcontent/animations/content/meiosis.html. Fertilization and meiosis alternate in sexual life cycles.

445 views • 24 slides

Meiosis & Sexual Reproduction

404 views • 24 slides

Meiosis and Sexual Reproduction

352 views • 23 slides

Linkage and Crossing Over

Linkage and Crossing Over. Linkage. Mr G Davidson. Linkage. Because a chromosome can have hundreds of genes, genes found in the same chromosome are said to be linked. During a cross, therefore, the linked genes will be transmitted together. e.g. peas T=Tall t=dwarf R=Red r=white

482 views • 21 slides

Meiosis & Sexual Reproduction

Meiosis & Sexual Reproduction. Sexual Reproduction. Involves: Meiosis Gamete production Fertilization Produces genetic variation among offspring. Sexual Reproduction Shuffles Alleles. offspring inherit new combinations of alleles, leading to variations in traits

393 views • 18 slides

Mendel & Meiosis

437 views • 17 slides

Mendel & Meiosis

293 views • 16 slides

Monday, 3/18/2013

247 views • 15 slides

Figure 8.12A

Figure 8.12A. Haploid gametes ( n ? 23). Sexual reproduction produces genetically different offspring. n. Egg cell. n. Sperm cell. Meiosis. Fertilization. Ovary. Testis. Diploid zygote (2 n ? 46). 2 n. Key. Mitosis. Haploid stage ( n ). Multicellular diploid adults (2 n ? 46).

558 views • 14 slides

Meiosis

241 views • 13 slides