3), and adult (Fig. 4). At room temperature, a fresh culture of the Drosophila melanogaster will produce new flies in two week: eight days in the egg and larva stages, and six days in the pupal stage. Two days after the flies emerge the female flies are already starting to reproduce. The Drosophila melanogaster is a good type of fruit fly for genetic studies because they are easily cultured, the flies have a great generation time, and D. melanogaster also have good mutant forms.
Birth: Around 38 weeks after the fertilisation has happened, the foetus will have developed enough for it to survive outside its mothers body. In most of the cases the babies are born with their head coming out first, but sometimes there are cases where the babies are born with their bottom coming out first and this what call the – breach birth. If there is a problem with a natural delivery then caesarean section is performed. Birth is the end of the foetal stage and the beginning of the infancy. Labour, or the process of birth is divided into three stages, which are: Dilation Delivery of the body Delivery of the placenta Dilation: this is where the strong uterine contractions cause the cervix to dilate until it is wide enough for the mother to bead to pass through- usually about 10 cm.
Because Arabella is now in the Fetus stage rapid changes were occurring throughout the following months Arabella mother felt her move for the first time at four months and it would feel like a punch and kick inside her mother’s stomach. The brain also becomes increasingly sophisticated during this stage, so now Arabellas brain can send messages to her body. Arabella can now also hear sound, her mother talks to her and lets her know that she can’t wait for her arrival. By the eighth month Arabellas mothers body was very tired and ready, Arabella is not 7 ½ lbs. (Feldman, 2001 p. 54) Arabella was full term, fully developed, and ready for birth, her mother’s body released the protein CRH which started the process of birth.
Ooh no it's showtime! Daughter, Sister, Wife, your in labor! Initial audience relevance: Considering having a baby is no secret and all of us may have either experienced having one, help make one, or witness the birth of one I thought we should learn more about the most painful yet wonderful act of labor and delivery. Initial credibility: I am a Mother of 3 little people ages 7, 6, and 3, making my labor and delivery experience times 3. In addition my worrying nature caused me to spend the longest 9 months of my life researching what should I expect when it's time to push.
The link between the baby’s present condition and the three-year-old sisters is that, the three year old might have transferred the virus to the six month old through touch, coughing or sneezing. As it is with shingles the virus was dormant for four month till the time that their mother noted the blister like lesions on the babies back (page17). 4.The baby did not have symptomatic illness when his sister was experiencing it because at the time, the baby was being breast fed by the mother. This means the baby was getting natural antibiotics from his mother through the breast milk. Two moths after the cessation of breast-feeding, the baby did not have that protection anymore.
During this stage, heart rate and body temperature continues to fall. Stage 4 sees the electroencephalography (EEG) dominated by delta waves and our metabolic rate reaches its lowest. And finally, stage 5 sees the occurrence of REM, or paradoxical sleep as our brain is very active but our body is paralysed. Infradian Rhythms are bodily rhythms that last for more than a day but less than a year, such as the menstrual cycle in women. The function of the menstrual cycle is to control ovulation and prepare the female for pregnancy.
The eggs will stay in the mothers uterus until after hibernation which is around late February and March. Then she will give birth to around 2-4 cubs depending on the age of the mother and how much food she has. When the cubs are born they are blind, hairless and very tiny. They weigh around 1 once or so. These cubs are virtually helpless for the first few weeks but can suckle their mother for a rich diet.
Problem Statement Once upon a time two rats, one female and a male rat found there way on a ship and then they set sail across the ocean. On late December the two rats left the ship and made their home on the deserted island. The number of young produced in every litter is six, and three of those are females. The original female giver birth to six young on January 1 and produces another litter of six every 40 days thereafter as long as she lives. Each female born on the island will produce a new litter every 40 days after thereafter.
Following an intensive screening and selection process the donor endures a few weeks of invasive medical procedures. First the donor and the woman who will carry the child must coordinate their menstrual cycles. Typically the donor and the recipient take birth-control pills, followed by shots of a synthetic hormone such as Lupron; the combination suppresses ovulation and puts their cycles in sync. After altering her cycle the donor must enhance her egg supply with fertility drugs in the same way an infertile woman does when trying to conceive. Shots of a fertility hormone are administered for seven to eleven days, to stimulate the production of an abnormally large number of egg-containing follicles.
6. During the first week, periodically watch the flies and journal any observations. Document the mating behavior, mutations, and life cycle of the flies. (Steps one through six were