Question

閱讀短文，根據(jù)短文內(nèi)容判斷下列句子的正(T)誤(F)。

People’s appearance (外貌) depends on things called genes (基因). Genes are found in the cells (細(xì)胞) of people’s bodies, and they are passed on from parents to children. Here are some facts about eyes.

Many Europeans and Americans can have blue, green or brown eyes. But a brown-eyed person, for example, may also carry genes for another colour in his body. So two brown-eyed or green-eyed parents may not have a child with the same colour eyes. If a child’s father and mother both have brown eyes, their child will probably also have brown eyes, but this is not certain.

If one parent has blue eyes and one has brown eyes, their child may have either blue eyes or brown eyes, but most will probably have brown eyes. The gene for blue eyes is recessive (隱性的) and the gene for brown eyes is dominant (顯性的). This means that if a child gets a gene for blue eyes and also a gene for brown eyes from one of his parents, brown will win, and the child’s eyes will be brown, not blue.

1.Children look like their parents because they get genes from their parents.

2.A brown-eyed child only carries the gene for brown eyes in his body.

3.If a child has brown eyes, one of his parents may have other colour eyes.

4.If a child’s father and mother both have green eyes, the child’s eyes must be green.

5.If one parent has blue eyes and one has brown eyes, their child mostly has brown eyes.

Answer 1