Question

Assertion : When pure breed tall plants are crossed with pure breed short plants , all the plants in F1 progeny are tall. When the tall plants in F1 progeny are crossed , short plants reappear in F2 progeny.

Reason : Traits are independently inherited.

pls...answer fast...​

Answer 1

Answer:

Mendel's studies yielded three "laws" of inheritance: the law of dominance, the law of segregation, and the law of independent assortment. Each of these can be understood through examining the process of meiosis.

To summarize, Mendel's first law is also known as the law of segregation. The law of segregation states that, 'the alleles of a given locus segregate into separate gametes. ' Alleles sort independently because the gene is located on a specific chromosome.

A dihybrid cross is a cross between individuals heterozygous at two different loci. Mendel's second law is also known as the law of independent assortment. The law of independent assortment states that the alleles of one gene sort into gametes independently of the alleles of another gene.

Mendel's third law, the law of independent assortment, states that the way an allele pair gets segregated into two daughter cells during the second division of meiosis has no effect on how any other allele pair gets segregated.

Answer 2

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

• The statements describe how the features are handed down from one generation to the next according to Gregor Mendel's rules of inheritance.
• Because each parent contributes one allele for each attribute to the offspring, it can be observed that the F1 progeny are all tall while the F2 progeny contain both tall and small plants.
• When a tall plant crosses with a small plant, all of the F1 offspring are tall because the tall trait is dominant. However, when the tall plants from the F1 generation are crossed, each child will acquire two dominant alleles.
• Some of these alleles will make the offspring tall, while others will inherit two recessive alleles, which will make the offspring short.
• Therefore -Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

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