Answer: 4; tt
Explanation: The two lowercase letters indicate that there are two recessive genes. If there is one uppercase letter and one lowercase letter, that would mean that it is heterozygous (as there is one dominant and one recessive gene).
Answer:
A. Pathogen- 4
B. aerobic- 7
C. hypothesis- 6
D. herbivores- 2
E. one another differentiation -5
F. homeostasis- 1
G. metabolism- 3
Explanation:
A. Pathogen- a pathogen is a living organism which can feed on other organism and can utilise their cellular components for their own survival. This affects the host cell and they get infected and the pathogen thus causes disease.
B. Aerobic- The oxygen appeared on Earth later compared to the time life originated on earth. Therefore some organism living today can use oxygen for survival and some not. The organism which utilises oxygen for their survival is known as aerobic microorganisms.
C. Hypothesis- The hypothesis is a predicted statement formulated based on the study related to the natural event which can explain the natural event.
D. Herbivores- The organism which cannot make food for themselves on their own but rely on another organism, especially the plants, are known as the herbivores.
E. Differentiation- Differentiation is the process which forms a variety of cells from a single cell and can perform different functions.
F. Homeostasis- is the mechanism which can maintain the internal conditions of the organisms.
G. Metabolism- refers to the chemical reactions which can help perform the normal functioning of the organism.
Answer: All of the mentioned Scientist made considerable contributions to understanding the DNA molecule in the order:
Explanation: 1.Fredrick Griffith
2. Avery, McCarty and MacLeod
3.Chargaff
4.Hershey and Chase
5.Watson and Crick
