Answer:When two true breeding plants breed they produce an F1 generation. The genotype for the true breeding parents would be TT and tt. Each of the offspring in the F1 generation would have the genotype of Tt and would have the phenotype of being tall, since tall is dominant. Next, we breed the plants of the F1 generation to produce the F2 generation. We know that the phenotype of the parents are both Tt. From this you can create a punnet square:
T t
T TT Tt
t Tt tt
Explanation:TT is expressed as tall
Tt is expressed as tall
tt is expressed as short
The punnet square shows you that 75% would be tall and 25% would be short.
The 200 short plants in the questions would be 25% of 800. Take the 200 away from 800 and you get approximately 600 that would be tall.
Do the Pune squares and you’ll get 50% for the offspring
1.
B
Photosynthetic organisms require light, in which the sun’s rays can only go so far
2.
C
The energy flow pyramid goes from decomposers to producers, meaning that if producers are dying out due to lack of nutrients, there must be something wrong with the decomposer population
Answer and Explanation:
Abiotic factors are those that are nonliving, while biotic factors are those that are living.
Abiotic factors in a classroom:
- chairs
- tables
- blackboard
Biotic factors:
- class pet
- plant in the classroom
Hope this helps!
