为您找到"
a twin
"相关结果约100,000,000个
Twin pregnancies have unique risks and outlooks. More types of twins exist than previously thought. Beyond identical and fraternal, there's a rare third type. Twin pregnancies have unique risks ...
The meaning of TWIN is either of two offspring produced in the same pregnancy. How to use twin in a sentence. either of two offspring produced in the same pregnancy; gemini; one of two persons or things closely related to or resembling each other… See the full definition. Games; Word of the Day; Grammar; Wordplay; Slang; Rhymes; Word Finder ...
The human twin birth rate in the United States rose 76% from 1980 through 2009, from 9.4 to 16.7 twin sets (18.8 to 33.3 twins) per 1,000 births. [5] The Yoruba people have the highest rate of twinning in the world, at 45-50 twin sets (90-100 twins) per 1,000 live births, [6] [7] [8] possibly because of high consumption of a specific type of yam containing a natural phytoestrogen which may ...
The special relationship between twins allows researchers to examine the differences between genetic and environmental influences over both physical and mental health, as well as traits and behaviors.
Twin definition: either of two children or animals brought forth at a birth.. See examples of TWIN used in a sentence.
twin, either of two young who are simultaneously born from one mother.Twinning, common in many animals, is of two biological kinds: the one-egg (monozygotic), or identical, type and the two-egg (dizygotic), or fraternal, type.The latter type is more usual and can be thought of simply as a litter of two. In humans, psychological studies of sets of identical twins, since they are genetically ...
TWIN definition: 1. either of two children born to the same mother on the same occasion: 2. one of two very similar…. Learn more.
twin (third-person singular simple present twins, present participle twinning, simple past and past participle twinned) (transitive, obsolete outside Scotland) To separate, divide. (intransitive, obsolete outside Scotland) To split, part; to go away, depart.
Our family joke about one of our twin's stitches for a lacerated upper lip was that he wanted to distinguish himself from his identical twin brother! In addition to life's bumps, bruises, and differing hairstyles, a child's DNA is constantly adapting to that child's experiences. Different stretches of one's DNA can turn on or off in ...
When mammals have two babies at once, each of them is a twin. If you have a twin brother or sister, the two of you are always the same age.