Read the article from pages 126-127 of your textbook.
Now answer the following questions in paragraph form.How Much Do You Know about Twins?
About eleven of every one thousand births are twins. That means that about one of every fifty people has a twin.There are two types of twins: fraternal and identical. Fraternal twins can be of the same sex or can be brother and sister. Sometimes they look alike, with the same hair and eye color, for example. Sometimes they do not look alike. Identical twins look exactly alike. They are always of the same sex.
What makes people the way they are? Is it the environment? For example, can an unhappy home create an unhappy person? Or is it heredity? Or is it both?
Think about two identical twins named Jim Lewis and Jim Springer. They were born in 1940. They grew up in different families and found each other when they were thirty-nine. As boys, both had a dog named Toy. Both men were six feet tall. Both weighed 180 pounds. Both were married two times -- the first time to a woman named Linda, and the second time to a woman named Betty. Jim Lewis named his first son James Alan, and Jim Springer named his first son James Allen. Both had the same job. They both liked to eat and drink the same things.
How can we explain this true story?
|
© 2001 by Addison Wesley Longman, Inc., a Pearson Education
company |