Answer: A PEDIGREE is a family-tree like representation of how organisms are related based on ANCESTRY. It shows genetic relatedness or blood relationship between individuals or organisms.
Explanation: Pedigree can be used to determine
1. Family history or genealogy.
2. Genetic or blood relationship.
3. Coefficient of relationship.
4. Degree of relationship.
5. Proportions of shared genes.
6. Mode of transmission of diseases.
7. Risk evaluation or determination.
Genetic counseling.
8. Linkage analysis.
Pedigree symbols are used in constructing pedigree.
Answer:
The embryo develops the heart, nervous system and face.
Explanation:
The nervous system is one of the first things to develop, following is the heart and then their face. Physical traits which also develop are the arms, legs and sexual organs.
It is because the moss sporophyte have specialized pores which is called the "stomata." It also supports photosynthesis because it allows the carbon dioxide and oxygen between outside air and sporophyte inside.
Answer:
*Every student may not have access to internet.
*Learning on gadgets may distract the mind .
*It is not effective way to teach.Everyone may not have good environment for learning.
