THE MARVELOUS REALITY The video‚ “Miracles of Life”‚ explains in detail how a human is born from the start. All organisms contain genes‚ DNA‚ and cells and are able to reproduce. In order for a baby to be born‚ a male gamete meets with the female gamete and this is called fertilization. This is the first step leading to the birth of a baby. The video is prepared not only to show the wonders of prenatal development but also to prove the marvels of life itself. Remarkably beautiful‚ the “Miracles
Premium Reproduction Reproductive system Male
Reproduction Male sperm fuses with female egg. If tdf (a gene) is present‚ then the embryo develops testes and produces testosterone. Female Reproductive system • Female baby develops if tdf is not present. • Tdf – a gene located on Y chromosome; if girl‚ then two X chromosomes‚ hence no Tdf. • Female hormones: progesterone and estrogen ( both secreted by mother’s ovaries and placenta which allow female genetilia to develop. Parts of the female reproductive system:
Premium Meiosis Reproductive system Pregnancy
Fertilization in Humans Fertilization begins with the fusion of two haploid cells into a diploid cell‚ the two haploid cells being a sperm cell and an egg cell into the diploid cell being zygote. The union can either be an external fertilization or an internal fertilization. This essay will focus on the internal fertilization found in mammals‚ and more specific‚ in humans. The first part will consider human anatomy of both the female and male sexual reproductive systems‚ and then follows a
Premium Reproductive system Reproduction Gamete
science‚ over 4 million babies have been born through IVF procedures and up to 300‚000 babies are ‘created’ every year‚ (ESHRE) Natural fertilization occurs‚ when the female gamete (i.e. the ovum) descends from the ovary‚ travels through the fallopian tube and is then met by a male gamete (i.e. spermatozoa). These two gametes then fuse together (fertilization) to form a zygote. The zygote then divides rapidly and goes through numerous changes. It is now known as a blastocyst. By the fourth/fifth day
Premium Pregnancy Fertility In vitro fertilisation
nothing. The zygote is a single cell formed at conception. The zygote contains the unique set of genetic instructions inherited from your biological parents. A zygote is a fertilized egg cell. Zygote comes from the bonding of a female gamete which is egg and a male gamete‚ sperm. The zygote is the first stage of development in genetic components of an organism. The zygote contains all the essential factors for the development. The zygote has genes from both parents. Zygotes begin as two haploid cells
Premium Chromosome Gamete DNA
EXPLORING THE EGG CELL By: Christina Vu SNC2D3 Mr.Ram FUNCTION OF THE EGG CELL: The egg cell is the female gamete used for sexual reproduction. The egg cell is responsible for providing half of the genetic material required for reproduction. When the egg cell joins with the sperm cell.... The egg cell is large and bulky structure which allows the sperm cell to get in easily. WHAT ORGANELLES DOES AN EGG CELL HAVE AND THEIR FUNCTION? Mitochondria: Produces energy for the cell by a process
Premium Cell Gamete
SBI 3U1 – 07: Biology Examination Definitions Unit 1: Diversity of Living Things ➢ Species: a group of organisms that can interbreed in nature and produce fertile offspring. ➢ Morphology: the branch of biology that deals with the structure or form of organisms. ➢ Phylogeny: the evolutionary history of a species. ➢ Taxonomy: the branch of biology that identifies‚ names‚ and classifies species based on natural features. ➢ Binomial nomenclature: the system of giving a two-word Latin name to
Premium Genetics DNA Cell
is Sexual Reproduction? Sexual reproduction occurs when offspring result from the fusion of a male reproductive cell and a female reproductive cell. These special reproductive cells are called gametes and they are produced in the reproductive organs of the organism. External Fertilisation * Gametes are tiny and are dehydrated extremely easily‚ so they only survive in specific conditions. * Some animals‚ specifically those that live in the water‚ like fish and amphibians perform external
Premium Reproductive system Menstrual cycle Uterus
most common reasons for abortion? The least common reasons for abortion? Main reason is selfishness‚ money or not ready‚ (to inconvenient The least common reason is health problems or rape Key terms Gamete – reproductive cell - sperm Zygote – formed by the union of male and female gametes (fertilization) Embryo – the unborn from fertilization up to 3 months Fetus – 3 months to birth Key legal cases‚ people‚ and dates The impact of the “right to privacy” decisions of the Supreme Court
Premium Abortion Death Pregnancy
NATIONAL SENIOR CERTIFICATE GRADE 12 LIFE SCIENCES P1 VERSION 2 (OLD CONTENT) FOR PART-TIME CANDIDATES NOVEMBER 2011 FINAL MEMORANDUM – 24/11/11 MARKS: 150 This memorandum consists of 12 pages. Copyright reserved Please turn over Life Sciences/P1 (Version 2) (Part-time) 2 NSC – Memorandum DBE/November 2011 PRINCIPLES RELATED TO MARKING LIFE SCIENCES 2011 1. If more information than marks allocated is given Stop marking when maximum marks is reached and put a wavy line and ’max’ in the
Premium Chromosome Y chromosome Meiosis