This is for anyone who's good at Biology! Please help me. Thank you!! Discuss the characteristics of polygenic traits and why they are considered to have an additive effect on phenotype expression. Give an example of a human polygenic trait other than skin color. Which type of visual display do you find most useful when discussing genetics, Punnett Squares or Pedigree Charts? Present your choice by discussing some valid points that support your decision.

Nimbostratus is the correct answer.
explanation: nimbostratus clouds are the type of clouds that are mostly likely present on gray, rainy day. these clouds produce continuous rain, snow and there is no thundering or lightening either.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.