![](https://lstatic.shangxueba.com/jiandati/pc/images/pc_jdt_tittleico.png)
One flower is red, and ____ is white.
A、the other
B、the others
C、others
D、another
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)
![](https://lstatic.shangxueba.com/jiandati/pc/images/no_answer.png)
A、the other
B、the others
C、others
D、another
A.A. the other
B.B. others
C.C. another
D.D. other
1. The inheritance of Japanese morning glory (日本牵牛花)flower color is controlled by two independtly genes and their interaction type is addive effect. The flowers with A_B_ are bule, flowers with aabb are red, flowers with A_bb and aaB_ are purple. When the F1 generated from two purple homozygous plant cross AAbb ×aaBB backcoss with one of the parant, what are the phentoype and their proportians of the progeny?
A、1/2 blue : 1/2 purple
B、1/4 blue : 3/4 purple
C、3/4 blue : 1/4 purple
D、1/2 blue : 1/4 purple :1/4 red
听力原文: Most flowers in nature are red, orange and yellow. If we have seen a black flower, it's a chance in a million. Researchers have made research on more than four thousand kinds of flowers and discovered that only eight of them are black.
As we know, sunlight is formed by seven different colored lights. The wave length of each light is different, so the quantity of heat in each light is also different. Flowers, especially their petals are easy to be harmed by high temperature.
Black flowers can take in all the light waves, which cause the flowers to dry up in a high temperature. So black flowers can rarely survive sunlight. But red flowers, orange flowers and yellow flowers can protect themselves from sunlight by reflecting the red light, orange light and yellow light, each of which has a large quantity of heat.
(30)
A.Only eight of the fourteen thousand kinds of flowers are black.
B.Only eight of the four thousand kinds of flowers are black.
C.The chance that we see black flowers is one-5000th.
D.The chance that we see black flowers is one 4000th.
A.print(rose.__color)
B.print(rose._Flower__color)
C.print(rose.Flower__color)
D.print(rose.color)
3.In snapdragon(金鱼草), red flower (R) is incomplete dominant to white flower (r) and narrow leaf (N) is complete dominant to wide leaf (n). Genes R/r and N/r are inherited independently. When the heterozygote RrNn selfcross, what is the phenotype and their proportion in the progeny?
A、The sugar maple.
B、The thistle.
C、The red rose.
D、The lily.
A.denotative
B.connotative
C.iconic
D.contextual
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!