somatic cell- all the diploid body cells of an animal that are not involved in a gamete formation. gametic cell- a cell that fuses with another cell during fertilization in organisms that reproduce sexually, homologous chromosome , sister chromatid, karyotype, autosome and sex chromosome. How many chromosomes are in a human somatic cell? 46 How many homologous chromosome pairs are in a human somatic cell? 22 How many chromosomes are in a human gamete? 23 How many homologous chromosome pairs are in
Words: 1992 - Pages: 8
Pre-natal Life Cycle Pre-Natal Life Cycle Joss Wilson Health and Nutrition The Pre-natal stage and the beginning of a person’s life begin with conception. Conception is the single handed moment when the sperm fertilizes an egg to create a single cell called a zygote. The zygote will undergo a period of a cell division forming a blastocyst which a ball-shaped collection of cells that implants itself in the uterine wall. After the blastocyst begins to develop rudimentary organs, it is
Words: 324 - Pages: 2
Cardiovascular system Main functions of the cardiovascular system The cardiovascular system transports nutrients and oxygen to all areas of the body. When the blood is travelling back to the heart, it flows through the veins. Whereas, after the blood has picked up oxygen from the lungs, it then flows away from the heart through the arteries. The cardiovascular system consists of the heart and blood vessels which run through the entire body. The right side of the heart contains deoxygenated
Words: 2038 - Pages: 9
The sperm deposited in the vagina travel in the cervical fluid through the cervix and into the uterus. The cervical fluid (this fluid may also be referred to as cervical mucus) must have the correct consistency in order to support the sperm to reach the uterus. If the fluid is too thick the sperm cannot reach the uterus, thus leading to infertility. “The cervical mucus must also be free of antisperm
Words: 733 - Pages: 3
the stage where life is made and is done so when a male sperm fertilises the female egg this normally happens in the fallopian tube after insemination at this point the fertilised egg makes it way to the uterus (womb) this is when the stage is called pregnancy. Millions of sperm are ejaculated by a man during orgasm, just one sperm is needed to fertilise the egg. In some cases the ovary can release more than one egg, dependant on how many eggs will be fertilised will determine the number of embryo’s
Words: 3039 - Pages: 13
Ethical Issues in Transgenic Mice and the Benefits on Human Welfare Presently, there has been a breakthrough in molecular biology with engineering transgenic animals. Transgenic animals are animals that carry genes from another species. This technology has created transgenic animals such as mice, rats, horses, chickens, goats, pigs, sheep and cows. The use of this technology brings with it ethical issues. This issue needs to be considered by stakeholders, to ensure that all parties are aware of
Words: 2241 - Pages: 9
Dealing with infertility can be a stressful, emotional experience, particularly if your friends or relatives have no trouble getting pregnant. Celia Dominguez, M.D., co-director of Pacific In Vitro Fertilization Institute understands the pain infertile couples experience. She and her colleagues at the Honolulu, HI, fertility treatment center use the latest techniques and innovations to improve fertility. During the past 31, years, the Hawaiian fertility doctors assisted in 4,600 successful pregnancies
Words: 343 - Pages: 2
everything they can in order to have children and so IVF (in vitro fertilisation) treatment has been recommended to these couples as it helps couples to conceive. Women can have blocked tubes and this helps them to still have a child by using their own eggs, the male in the family can be infertile and so this is seen to be the only way to have children. The first ‘IVF baby’, Louise Brown, was the first person conceived by in vitro fertilisation . Since then, the technology has advanced, and techniques
Words: 1420 - Pages: 6
2009, and can be named on the child's birth certificate (http://www.bionews.org.uk/page_116900.asp). The male sperm donor did not want to be involved at all. This just left the two ladies battling it out for parental rights. The female that carried the child thought she had all the legal rights as the parent but it played out differently. The court ruled that the female that was the egg donor had equal parental rights. They are still working out the visitation and child support kinks. The situation
Words: 714 - Pages: 3
From the beached sperm whales that have been founds stomach contents and the bodies of squids that were found scientists believe that sperm whales are the giant squids only known predators because they have been found with beak marks, sucker marks, and remains of giant squids in their stomachs which means they are probably the animal that survived the encounter. But since one of the Giant squids only predator is the Sperm whale it may affect the Sperm whale population, and possibly
Words: 654 - Pages: 3
