REPRODUCTIVE SYSTEMby :

RIKA DEWI PURNAMASARI4401412119

ELITA ANGGRAINI SETYOBUDI4401412054

Cell Reproductive System

Plant Reproductive System

Animal Reproductive System

CELL REPRODUCTIVE SYSTEM

CELL REPRODUCTIVE SYSTEM

• Cells must accurately separate genetic material during cell reproduction

• Cell reproduction devided into two methods

Mitosis

Meiosis

MITOSIS

Produces two cells identical to original cell.

Each cell has full DNA complement.

Used for growth and repair of somatic (body) cells.

STAGES OF MITOSISPROPHASE

METAPHASE

ANAPHASE

TELOPHASE

INTERPHASE

PROPHASE

Chromosomes shorten and become visible

(early prophase).

Chromosomes made up of 2 identical

chromatin threads called chromatids.

Centrioles migrate toward opposite pole pulled

by kinetochore.

Nuclear envelope disintegrates (late prophase).

PROPHASE

METAPHASE

Chromosomes lined up in the middle.

Mitotic spindle complete

METAPHASE

METAPHASE

Chromosome at Metaphase

ANAPHASE

Sister chromatids (= identical strands of DNA) split from each other to form divided identical chromosomes.Kinetochore fibers shorten and pull divided identical chromosomes to opposite sides of the dividing cell.Polar microtubules slide past each other, lengthening and pushing the cell apart

ANAPHASE

TELOPHASE

Divided chromosomes reach opposite sides of cell and begin to disperse as chromatin.Nuclear envelopes reforms around separated collections of chromosomes to form two nuclei.Cytokinesis- completion of cell divisionSpindle apparatus disintegrates.Cytokinesis usually begins near the end of telophase.

TELOPHASE

INTERPHASE

Terbentuk dua sel anak dan kembali sel mengadakan pertumbuhan, yang diikuti dengan sintesis DNA dan selama itu kromosom terduplikasi. Pada interfase ini tidak terlihat bentuk kromosom. Pada mitosis antara fase tidak ada batas yang jelas.

INTERPHASE

INTERPHASE

• G0 - time when a cell performs its normal functions - example: a cell in your stomach lining might make and release enzymes that aid in digestion

• During G1 (gap or growth), S (DNA syntheis) and G2 of interphase a cell roughly doubles everything in its cytoplasm- increases its supply of proteins, the number of many of its organelles, and grows in size- S phase: chromosome duplication - in G2 each chromosome consists of 2 identical sister chromatids and the cell is preparing to divide.

INTERPHASE

MEIOSIS

Produces 4 cells that are not identical to parent cell.

Daughter cells have half genetic complement.

Produces gametes (sex cells).

REPRODUCTIVE SYSTEM

CELL REPRODUCTIVE SYSTEM

MITOSIS MEIOSIS

REPRODUCTIVE SYSTEM

PLANT REPRODUCTIVE SYSTEM

ASECSUAL REPRODUCTION

SECSUAL REPRODUCTION

REPRODUCTIVE SYSTEM

HUMAN REPRODUCTIVE

SYSTEM

REPRODUCTIVE ORGANS

MALE FEMALE

TestesFormed in abdominal cavity.Cryptorchidism “hidden testes”

Sterility if not corrected in childhoodSubject ot tumor formation

Male Reproductive System

SCROTUMOutpouching of skin that contains

both testes; can be moved closer to or farther from body to help maintain temperature suitable for sperm formation