'23 pairs' presentation slideshows

8 th Grade Lesson 2B

Puberty, Anatomy, and Pregnancy. 8 th Grade Lesson 2B. Puberty. Time of growth and change Can start between 9 - 16 for girls & 10 - 17 years of age for boys Glands in body start making hormones Hormones cause Body changes Emotional changes. The Hypothalamus & Pituitary.

576 views • 43 slides

Meiosis

457 views • 25 slides

Genetic Testing

Genetic Testing. By: Lou Ann Witte Medina Valley Middle School Louann.witte@mvisd.com. What is Genetic Testing?. Genetic testing examines genetic materials to find gene mutations Direct examination of DNA molecule detects genetic disorders A DNA sample can be obtained from any tissue.

788 views • 23 slides

Cell Division: MITOSIS

Cell Division: MITOSIS. Genes and Chromosomes. Humans have 46 chromosomes in all body cells ( somatic cells) You have 23 pairs of homologous chromosomes The two chromosomes in the pair look similar and contain genes which affect the same characteristics (2 different alleles ).

388 views • 22 slides

Meiosis

Meiosis. Introducing Alleles. Asexual reproduction produces genetically identical copies of a parent ( clones ) Sexual reproduction introduces variation in the combinations of traits among offspring. Genes and Alleles.

220 views • 22 slides

Meiosis

Meiosis. Objectives To learn the phases of Meiosis To understand its role in sexual reproduction To compare and contrast with mitosis. What is meiosis?. It is a major part of sexual reproduction Meiosis is a process to convert a diploid cell to a haploid gamete, and

184 views • 18 slides

Do Now: Genetics True/False Quiz

Do Now: Genetics True/False Quiz. Human contains 23 pairs of chromosomes 2 bases in DNA code for one amino acid Sex chromosomes for female are XY Phenotype is the physical characteristic of a gene Meiosis generates somatic cells Sperm is a gametic cell

65 views • 6 slides