Difference Between Punnett Square and Pedigree

Thekey differencebetween Punnett square and pedigree is thatPunnett square displays all possible基因型可以继承来自两个亲本的基因型while pedigree represents the family history of a particulartrait, especially the inheritance of agene.

Punnett Square和Gedigree是两种类型的工具，可帮助确定基因遗传的可能性。两者都表明将特定特征继承给后代的可能性。换句话说，两者都可以预测家庭线的继承模式。因此，他们可以帮助确定儿童遗传疾病的风险。Punnett Square只是一种图形方式，可以显示两个父母的孩子可能发生的所有可能的基因型。

内容

1.Overview and Key Difference
2.What is Punnett Square
3.What is Pedigree
4.Similarities Between Punnett Square and Pedigree
5.并排比较 - Punnett Square vs Gedigree以表格形式
6。概括

What is Punnett Square?

Punnett square is a tool that shows all the possible genetic outcomes of a cross. In other words, Punnett square is a graphical way of showing all possible genotypes from two-parent genotypes. Reginald Punnett created the concept of Punnett square in the early 1900s. In genetics, Punnett square is often used to illustrate the principles of Mendelian inheritance. There are two types of Punnett squares. One illustrates a单杂化十字which shows single trait determined by one locus. Therefore, it has only four boxes. The second one is larger, and it follows two traits, and there are sixteen boxes.

Punnett Square有助于确定孩子从父母那里遗传遗传疾病的风险。此外，Punnett Square可用于选择具有特定特征的生物体的育种计划。但是，庞内特广场无法解释遗传联系的现象。此外，Punnett Square无法预测受到几个基因和环境因素影响的某些特征的遗传模式。

什么是谱系？

血统图代表特定特征的遗传家族史。确定下一代疾病的风险和存在很有用。因此，谱系的目的是分析同一家庭成员中特定特征的继承。该分析通常是在三代或更多的情况下进行的。

In the pedigree analysis, marriages are represented by lines. Males are represented by boxes, while females are represented by circles. If the analyzing trait is present in any individual, it is represented in black, or it is shaded. Moreover, it reveals whether the trait is dominant or recessive. Furthermore, it indicates whether the trait resides in the autosomes or sex chromosomes. The pedigree shows the mode of inheritance of a trait in the family. Most importantly, pedigree helps to identify haemophilia or colour blindness in advance in the coming generations.

What are the Similarities Between Punnett Square and Pedigree?

• Punnett Square和血统都表明了由基因编码的特征的继承。
• Both assume that traits are inherited independently.
• Both can help to determine the risk of an inherited disease in a child.
• They can indicate the genotypes and phenotypes of the offspring.
• In addition, they can confirm whether the trait is dominant or recessive.

What is the Difference Between Punnett Square and Pedigree?

Punnett square is a square diagram that shows all possible genotypes of a particular cross or breeding experiment while pedigree is a chart that shows the inheritance pattern of a particular trait, especially a disease through a family. So, this is the key difference between Punnett square and pedigree. Furthermore, a Punnett square represents a cross, either a monohybrid or dihybrid cross, while pedigree represents generations of a human family, especially three or more generations of the same family.

Below infographic shows more details of the difference between Punnett square and pedigree.

摘要 - Punnett Square vs edgigree

Punnett square is a graphical way of showing all possible outcomes of a cross. Therefore, it is useful to predict the genotypes resulting from a monohybrid or dihybrid cross. In contrast, pedigree analysis is a chart that shows the inheritance pattern of a trait (gene) in three or more generations of a family. Hence, the pedigree chart is useful to trace the inheritance pattern of genetic disease through a family and generations. Thus, this summarizes the difference between Punnett square and pedigree.

Reference:

1.“ Punnett方形|协议”。Jove.com，2020年，Available here.
2. “Punnett Square: Definition & Example.” Study.Com, 2020,Available here.

Image Courtesy:

1. “Punnett Square” By Pbroks13 – Own work(CC BY-SA 3.0)viaCommons Wikimedia
2. “Sex linked inheritance” By Simon Caulton – Own work(CC BY-SA 3.0)viaCommons Wikimedia