wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

What are the 3 laws of inheritance?


Open in App
Solution

Three laws of inheritance:

  1. Three laws of inheritance were proposed by Gregor Mendel.
  2. They are the Law of dominance, Law of Segregation, and Law of Independent Assortment

Law of dominance:

  1. “When parents with pure, contrasting traits are crossed together, only one form of trait appears in the next generation.”
  2. This law is also known as the ‘ First law of inheritance.’
  3. According to the dominance rule, dominant attributes always overshadow or hide recessive qualities.
  4. All seeds in the F1 generation were found to be round when round-seeded pea plants (RR) were crossed with wrinkled-seeded pea plants (rr) resulting in(Rr).

Law of segregation:

  1. “ When an organism makes gametes, each gamete receives just one gene copy, which is selected randomly. ”
  2. The law of segregation states that the two alleles of a single trait will segregate at random, with a 50% probability that either allele will end up in either gamete.
  3. It's all because of a single gene. An allele of one gene separates from an allele of another gene according to the law of independent assortment.
  4. The kind of allele inherited by the children, for example, determines the color characteristic of the bloom in plants.
  5. From each parent plant, one allele is handed down to the progeny.
  6. The allele sets of the child will be defined by the two gametes' chromosomes merging at fertilization.

Law of Independent Assortment:

  1. “ The alleles of two (or more) different genes get sorted into gametes independently of one another. ”
  2. Rabbits from two different hybrids are crossed.
  3. Both rabbits have the Bb Gg genotype.
  4. Each rabbit generated gametes before breeding.
  5. The alleles are split at this point, and each chromosome's copy is given to a distinct gamete.

flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Laws of Mendel
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon