Question
Explain the laws that Mendel derived from his monohybrid crosses.

Answer

Law of dominance and law of segregation are the two laws, Mendel derived from his monohybrid crosses.
  1. Law of dominance explains that in a dissimilar pair of factors of a trait, one of them expresses itself (dominant) and the other remains hidden (recessive).
  • It also explains the expression of both the traits in the F, progeny, in a ratio of 3 : 1.
  1. Law of segregation states that the members of an allelic pair that remained together in the parent/ hybrid, segregate during gamete formation and enter different gametes.
  • A homozygous parent produces all gametes that are similar while the heterozygous one produces two kinds of gametes, each having one allele for a trait.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Name the thin clear coat surrounding mammalian egg.
Do you justify the statutory ban on aminocentesis in our country? Give reasons.
Increased levels of atmosphere $CO_2$ result in the 'greenhouse effect' and thus global warming. The graph shows the effect of these changes on photosynthesis. What do you infer about the effect of $CO_2$ and temperature on the rate of photosynthesis in plants?
Pollen banks are playing a very important role in promoting plant breeding programme the world over. How are pollens preserved in the pollen banks? Explain. How are such banks benefitting our farmer? Write any two ways.
What is the main idea behind “Joint Forest Management Concept” introduced by the Government of India?
Write a note on cultural and religious importance of biodiversity Which type of conservation measures, in situ or ex-situ will help the larger number species to survive? Explain.
Explain the following.
  1. What is the most common example of pleiotropy in humans?
  2. How are the pleiotropic genes useful?
Briefly explain IVF and ET What are the conditions in which these methods are advised?
Do you support 'dope test' being conducted on sports persons participating in a prestigious athletic meet? Give three reasons in support of your answer.
i. Write how parasites have evolved with adaptation to co-exist with their hosts in an ecosystem.
ii. Parasites are host specific and tend to co-evolve. How would the parasite respond if the host evolves a certain mechanism to resist or reject the parasite?