Gamete

success rate of IVF. This has altered medical history by providing future gynecologists and obstetricians the opportunity to preserve gametes and embryos of patients. Couples that were sterile (infertile) or have had trouble conceiving now have more options to choose from when considering children. Patients can now do advance procedures and store their embryos or gametes for future use. On a personal note, some close friends of mine have chosen the process of IVF after years of being unable to…

Background Turner’s syndrome is a genetic disorder that occurs in 1 in every 2,500 female births. Though it occurs in about 3% of fetuses, 99% of these fetuses are spontaneously aborted[1]. Turner’s syndrome can be defined as a combination of phenotypes with varying expressivity along with the complete or partial loss of an X sex chromosome[2]. Symptoms of Turner’s syndrome include, but aren’t limited to short stature, glucose intolerance, broad chest and widely spread nipples, amenorrhea,…

created by translocation. An extra 13th chromosome somehow attached to one of the gametes. Infants die quickly with little chance at life. Genetic researchers don’t know why. Trisomy 13 is a genetic mutation linked to the 13th chromosome. Instead of a pair of the 13th chromosome, you somehow would have extra. The cause of having this third 13th chromosome was that the extra chromosome was attached to one of the gametes. This is called Translocation. The side effects or birth defects of trisomy…

tubes that transport urine from the kidneys to the urinary bladder. URETHRA: The urethra is the duct that transports urine from the urinary bladder to the exterior of the body. OVARIES: The ovaries are the female reproductive organs that produce gametes (ova), estrogen, and progesterone. OVIDUCT:Tube that links the ovary to the uterus, which the ovulated oocyte travels down to become fertilized. UTERUS:The uterus nurtures the fertilized ovum that develops in the…

Plant Hormones: DIAGRAMS/PICTURES NEEDED: Hormone Locations (color coordinated and showing relative concentrations) Auxin- Auxin is a hormone that’s main function is to promote cell elongation in stems, buds and roots and also plays a small part in the differentiation or new cells. Auxin is present in high concentrations in germinating fruits and seeds, but it is not yet known whether this high concentration of auxin is passed on from the mother or whether is is created but the developing…

Meiosis is the dividing of cells as the embryo develops in the womb, as stated in the Pearson Anatomy & Physiology edition 10. It starts the haploid division of gametes that further develops the embryo into a fetus and then into a fully functional baby within nine months. This form of cell replication creates four daughter cells that have only half of the amount of chromosomes that are contained within a human body, 23 instead of 46. Within the book it explains that meiosis goes through…

Introduction It is estimated that there are one trillion species on earth despite all being originated from one common ancestor, LUCA. In this essay the importance and origin of diversity within species and between species is explored using Coleoptera as the taxonomic group. Coleoptera is the most dominant order of insects with 350,000-400,000 species, this is 40% of all insect species (Gillott, 1995) and the largest order in the animal kingdom. The degree of differences between individuals is…

Embryology is the study of sex cells, or gametes. The facts of Embryology only make sense if evolution is true. All vertebrates start as a single cell, and the genes that let us know one from another will start up at different points during development. This is called atavism. Humans, for example…

male and female of the species have to be involved. The presence of the respective reproductive systems is the primary factor that classifies the male and female. The male reproductive system is the system that produces the male gametes known as sperms that contain the paternal genes. This system is comprised of two primary structures called the penis and the scrotum, which is found in the pelvic girdle located outside…

fruit. Flowers are derived evolutionarily from modified leaves. The main parts of a flower are the sepals and petals, which protect the reproductive parts: the stamens and the carpels. The stamens produce the male gametes, which are pollen grains. The carpels contain the female gametes, which are the eggs inside ovaries. The walls of the ovary…