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2021-05-14

What 7 characteristics did Mendel study in his pea plants?

What 7 characteristics did Mendel study in his pea plants?

On the next screen, he reveals that there are seven different traits:

  • Pea shape (round or wrinkled)
  • Pea color (green or yellow)
  • Pod shape (constricted or inflated)
  • Pod color (green or yellow)
  • Flower color (purple or white)
  • Plant size (tall or dwarf)
  • Position of flowers (axial or terminal)

What were the 7 traits Mendel studied?

After initial experiments with pea plants, Mendel settled on studying seven traits that seemed to be inherited independently of other traits: seed shape, flower color, seed coat tint, pod shape, unripe pod color, flower location, and plant height. He first focused on seed shape, which was either angular or round.

What did Gregor Mendel discover about the traits of the pea plants he studied?

Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.

What type of dominance did Mendel study with the garden pea?

Mendel crossed pure lines of pea plants. Dominant traits, like purple flower colour, appeared in the first-generation hybrids (F1), whereas recessive traits, like white flower colour, were masked.

Why do Mendel choose pea plant for his experiment?

For Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.

Why did Mendel study pea plants quizlet?

Mendel studied pea plants because they reproduced sexually and had traits that were easily observable. Each trait is passed from generation to generation. Some traits are passed together from generation to generation. When gametes are formed, genes separate.

What did Mendel do in his first experiment?

Mendel began his studies by growing plants that were true-breeding for a particular trait. In his first experiment, Mendel cross-pollinated two true-breeding plants of contrasting traits, such as purple and white flowered plants. The true-breeding parent plants are referred to as the P generation (parental generation).

What was the outcome of F2 generation in Mendel’s first experiment?

The F2 generation results from self-pollination of F1 plants, and contained 75% purple flowers and 25% white flowers. This type of experiment is known as a monohybrid cross.

What is the P F1 and F2 generation?

Explain the P, F1, and F2 generations. P means parental generation and they are the only pure plants, F1 means first generation and they are all hybrids that show the dominant trait, and F2 means second generation, which are the grandchildren of P.

What describes the F2 generation in Mendel’s experiment?

Answer Expert Verified The parental generation is the first set of parents crossed, the F1 generation consists of all the offspring from the parents, while the F2 generation consists of the offspring from allowing the F1 individuals to interbreed.

What is an example of independent assortment?

Example: Pea color and pea shape genes. Let’s look at a concrete example of the law of independent assortment. When Mendel did this cross and looked at the offspring, he found that there were four different categories of pea seeds: yellow and round, yellow and wrinkled, green and round, and green and wrinkled.

What is the independent assortment of genes?

The Principle of Independent Assortment describes how different genes independently separate from one another when reproductive cells develop. Independent assortment of genes and their corresponding traits was first observed by Gregor Mendel in 1865 during his studies of genetics in pea plants.

What is the difference between segregation and independent assortment?

The law of segregation describes how alleles of a gene are segregated into two gametes and reunite after fertilization. The law of independent assortment describes how alleles of different genes independently segregate from each other during the formation of gametes.

Why Law of Independent Assortment is not universal?

Most of the genes are linked, they are situated on one chromosome. As a result, this law of independent assortment can be applied only to those characteristics that are situated on other chromosomes. …

What violates the Law of Independent Assortment?

Linked Genes Violate the Law of Independent Assortment. The segregation of alleles into gametes can be influenced by linkage, in which genes that are located physically close to each other on the same chromosome are more likely to be inherited as a pair.

Is Law of Independent Assortment universal?

Many genes are located on one chromosome, i.e. they are linked. Therefore, the law of independent assortment is applicable only for the traits which are located on different chromosomes. Thus, law of independent assortment is not universally applicable.

Why is the Law of Independent Assortment important?

Independent assortment of genes is important to produce new genetic combinations that increase genetic variations within a population.

What phase does the Law of Independent Assortment occur?

When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. This is called independent assortment.

Under which conditions does the Law of Independent Assortment hold good and why?

Under which condition, does the law of independent assortment hold good? Why? Law of independent assortment states that separate genes do not influence each other while expressing. For example, the colour and texture of pea seeds are governed by two different genes that express independently.

Which Mendelian principles will not operate?

So, the correct option is ‘Independent assortment’.

Which of the following is an example of Codominance?

Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed.

Which of the following will not result in variations among siblings?

Solution : Linkage will not result in variations among siblings because linked genes occur on the same chromosome and are transmitted together. In linkage there is a tendency to maintain the parental gene combinations except for occasional crossovers.