The vagina takes the penis during sexual intercourse and also aids as a tube for menstrual flow from the uterus. The cervix is a cylinder-shaped neck of tissue that connects the vagina and uterus. It is also the lower part of the uterus in the female reproductive system. The cervical canal is a passage through which sperm must travel to fertilise an egg cell after sexual
The process involves meiosis – having the exact number of chromosomes from both parents (23 from each). It also includes fertilization which fuses two of the gametes and the restoration of the original number. When meiosis occurs the chromosomes of each pair crosses over to create homologous pairs. Most animals (including humans) and plants reproduce sexually. Sexually reproducing organisms have two sets of genes for every trait (called alleles).
Outline and evaluate the Biological approach to gender development The biological approach to gender development tells us that sex determines if an individual is genetically a male or female but that gender determines your own feelings about who you are as a person, either masculine or feminine, and this is due to the differences in their brains. This usually is due to the chromosomes a person has or hormonal differences. Every individual has 23 pairs of chromosomes. Women have 2 X chromosomes while men have an X and a Y chromosome. As an embryo, a male’s Y chromosome starts to produce testosterone and other male sex hormones.
It is also important to check if their rate of development is typical or needs further investigation. Unit 022 Outcome 2 AC 1 Understand the factors that influence children and young people's development and how these affect practice. Explain how children and young people's development is influenced by a range of personal factors. Children's development can be influenced by many different factors such as their health, family environment and their access to education. Development starts from the moment baby's are conceived as genetic information is connected from the egg and the sperm.
Harvest of Egg Cells For mammals, which are the animals that scientists most commonly clone, egg cells are microscopic. Scientists gather these cells from adult females. Since the success rate for animal cloning is still very low, they need many of these egg cells. All egg cells used in this step are haploid, meaning they have not been fertilized with sperm. They thus contain only half of the genetic material common to the animal's cells and have not yet undergone any development.
A couple examples include human growth hormone and follicle stimulating hormone. Human growth hormone regulates the growth and metabolism of the body. Follicle stimulating hormone stimulates the production of sperm in the body. b. Identify the following.
2. Where does fertilization take place? Fertilization takes place where the sperm meet up with the egg in one of the fallopian tubes. 3. At what stage of fetal development does implantation take place?
Life’s Greatest Miracle” is a documentary about the development of life and how man’s biological make-up is able to reproduce itself. The discussion starts with the role of DNA in the process of reproduction. It is crucial because it holds the chromosomes that give each human unique physical trait. The combination of genes starts through the process of meiosis wherein the male and female makes sperms and eggs. The presentation then explains the inside of the male and female reproductive system and how both are different from each other.
One of the causes that brought about the differences in alleles is sexual reproduction during meiosis. There are two main events during meiosis, crossing over of chromatids and independent segregation of chromosomes. During meiosis I, homologous pairs of chromosomes come together and pair up. The chromatids twist around each other and bits of chromatids swap over, the crossing over of chromatids in meiosis I means that each of the four daughter cells formed from meiosis II contain chromatids with a different set of alleles, which increases genetic variation. Meanwhile during the independent segregation of chromosomes, half of your chromosomes come from your mum (called maternal chromosomes) and half from your dad (called paternal chromosomes).
A part of the blastocyst will become the placenta, which will serve to nurture the growing embryo. Another section of the blastocyst will contain the inner cell mass that makes up the embryo. The cells of the inner cell mass are the embryonic stem cells, which can give rise to all the types of cells found in an adult human body. Embryonic stem cells can form around two hundred and ten