In pea plants, tall is dominant to dwarf. A heterozygous tall plant is crossed to a dwarf plant. What is the expected phenotypic ratio of the offspring?单项选择题

A

3 tall : 1 dwarf

B

1 tall : 1 dwarf

C

1 tall : 3 dwarf

D

All tall

登录即可查看完整答案

我们收录了全球超50000道真实原题与详细解析,现在登录,立即获得答案。

类似问题

Gray seed color in peas is dominant to white. Assume that Mendel conducted a series of experiments where plants with gray seeds were crossed among themselves, and the following progeny were produced: 302 gray and 98 white. What is the most probable genotype of each parent?

In tomato plants, the allele for red fruit (R) is dominant to the allele for yellow fruit (r). Two plants, both heterozygous for fruit colour, are crossed. What is the expected phenotypic ratio of red to yellow fruits in the offspring?

Imagine you are a farmer and you perform a monohybrid cross between two plant species. One plant is homozygous recessive for yellow leaves and the other is heterozygous with green leaves. After you complete the cross you produce the following outcome in the offspring:  122     Yellow leaves  78       Green Leaves  In order to perform a Chi-Squared analysis, you first need to determine the expected outcome. What outcome do you expect to get based on this mating?     

In garden peas, a single gene controls stem length. The recessive allele (t) produces short stems when homozygous. The dominant allele (T) produces long stems. A short-stemmed plant is crossed with a heterozygous long-stemmed plant. Which of the following represents the expected phenotypes of the offspring and the ratio in which they will occur?

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！