Answers for: Part I
1-
There are two types of twins:
• Monozygotic twins, also called “Identical twins:”
They arise from a single sperm and single egg. Then the zygote is divided into two identical zygotes that carry the same genetic material and the same physical appearance.
• Dizygotic twins: also called “Non-identical twins:”
They arise from two sperms and two separate eggs. Thus, the two zygotes will not carry the same genetic materials or the same physical appearance.
2-
Identical twins are completely identical since they come from the same zygote. However, identical twins may not remain 100% identical overtime due to many factors such as environmental factors.
3-
Studying twins can tell us a lot about the genetic influence. Studying twins tells us the difference between “concordant” and “discordant.” Concordant means that both twins have, or do not have, the same trait, while discordant means that one of the twins does have a trait that the other twin does not. Studying twins tells us about twins’ possibilities of being concordant for specific traits. Actually, studying twins brought our attentions to the point that monozygotic twins are
…show more content…
However, when we compare the methylation profiles for 50 years old twins, we see that the methylation amounts in each figure of the 50 years old twins (shown in red and green) are not similar. I think that the environment can affect the DNA methylation, as twins get older. The 50-year-old twins have different life environments, for example; one twin might expose to the sunlight more than the other twin, so they do not have a similar methylation profile. While the 3 years old twin have almost similar environments, as they spend most of their times at home, so they have similar methylation
However, he is married and has one child. Although these brothers share their differences they do share some similarities. Although they both have adoptive parents, they have the same biological mother and father. Therefore they share some of the same physical features such as hair color and eye color.
“that is why people usually just call one of us peace most of the time” Another thing that usually bothers a twin is being compared to one another. even though twins are almost the same person, it does not mean that they have the same personality. both twins agree that grades and sports are the biggest thing they get compared to each other with. from friends to family they are always being compared to each other by somebody. even though are some negatives about being a twin there are more positives to it than negatives.
The other twin is known as the autosite. Parasitic twins are extremely rare. It is estimated that they only occur in about one in
He explains that the eggs are fertilized and then they go into a process where the eggs are divided and can get up to 96 identical twins from this way. The students enter into one of the
There is a new documentary titled “Three Identical Strangers” which tells the story of three identical triplets who were separated at birth and raised by different families. It was shown at the recent Sundance Film Festival. The three, born in 1961, were part of a controversial psychology experiment to answer the nature versus nurture debate on raising children. Robert Shafran, David Kellmann, and Eddy Gallan were monitored for the study by the Manhattan Child Development Center. It is headed by Dr. Peter Neubauer, a psychoanalyst.
The way this twin believed he should not be born the normal way influenced his behavior and how he followed the dark path. No baby is born through the armpit so it caused some
While I realize that few people have the opportunity to experience such a close bond, this “twin thing” has hindered my individual development. Even though I realize that it is hard for people to distinguish me from my identical twin, it is frustrating to be always referred to as “the twins.” People
When my mother was a wee child, she was adopted. So we don’t really know where this set of twins came from aka Christian and myself. Mom thought at first she grabbed the wrong kids at the hospital, and she might have. Right now I am looking for some answers maybe to tell me whether or not I will be cursed with a set of twins.
The right-handed twin chose to be born the normal way, showing that he is smart and has respect for his mother. He always told the truth, and tried to “accomplish what seemed to be right and reasonable”(38). He made the weak animals of the world, and the sweet berries and fruits for them to eat. He also made man, which makes him the “Master of Life”. The right-handed twin is a symbol of the sun and daylight.
The Study of Twins by Bailey and Pillard When researchers are very interested in studying that genetics has a big factor in the appearance of certain characteristics or homosexuality, they knew that the best thing to do is to take a look and study the people who are closely and very related to each other. Michael Bailey and Richard Pillard performed a research study and they compared 56 monozygotic twins or identical twins which have exact same zygote and fertilized egg, 54 dizygotic twins or fraternal twins and 57 genetically unrelated adopted brothers. They used twins as subject to this research because of course twins have identical genomes, including the sex chromosome pair. If genetics has a big impact in the origin of homosexuality
Most people have mirrors in their house, the thing about mine is that it moves. Being a twin has shaped the majority of my life, there are a lot of good things about a twin but there are some disadvantages to being a twin. With the good and bad there are always lessons to be learned and chances to grow. Growing up with a best friend has been great, with always having someone there who likes the same things as I do. She has always been there to cause havoc with me, and to this day she is my best friend, we know everything about each other.
TS 1 - Identical twins have many more differences because of how they were raised. Take Bonnie and Brenda, Brenda was the lady and Bonnie was the tomboy. Bonnie became a man and to the nature side, Brenda should have become a man but did not. Also look at the identical twins Sam and Anais, they might have the same laugh and looks, but to the nature side they should have the same kinds of jobs. Being an actress and a fashion designer may have some of the same things in common, but not enought to say they are the same kind of careers.
Studies show that nurture is more responsible for the way you act. Nurture dictates how you respond to others. It is true that many identical twins are a lot alike, but people don’t notice the differences between them. For example, the Jim twins were a lot alike, but I think that is just a coincidence. Anais and Sam both had the same laugh, but they also had different jobs.
Incidentally a parasitic twin is the smaller and less completely developed member of a pair of unequal conjoined twins, often consisting of an amorphous mass of tissue attached to or within the larger twin. One of the cutest but saddest situation of this is , Len and Ernie, Two boys, one head, Ernie born with a parasitic twin, he named him Len. In his early career they were best friends and Ernie became very attached to his twin Len. Later in life they had Len removed and Ernie became very depressed of the lost of his brother (Pednaud, 2014, sect. 4). The author says it is believed that at Ernie 's young age he was as smart as a nineteen year old.
There are many myths about the struggle between these twins in hymns from a book, dating back to the second millennium before Christ existed. The relationship of these twins proves that there is symbolism in twins not only in Greek Mythology but also in Persian Zoroastrianism Mythology. Likewise, in Northeast America, there is also a myth about opposite twins; one was born normally and the other was from her armpit (Garry and El-Shamy 458-463). The unnatural born, “who would engender evil people” would kill “his mother and blamed it on his brother,” (Garry and El-Shamy 458-463) who would symbolize good people. These myths prove there is opposite symbolism in twins.