The correct answer as to which observation of dihybrid cross led to Mendel's law of independent assortment would be the presence of one trait that did not affect the presence of another. The correct option would be D.
The law of independent assortment states that traits are inherited independently.
This means that one gene codes for one trait and genes do not influence each other. For example, a gene for eye color would be independently inherited from a gene for skin color.
Mendel arrived at this observation when he carried out a cross involving two traits. Each trait followed the same phenotypic ratio as if they were a monohybrid cross. It does not matter the number of trait involved in the cross, they never influenced each other.
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carbon dioxide and uric acid
oxygen and urine
carbon dioxide and urine
The correct answer is option A
Plants performs both the functions photosynthesis and cellular respiration.The waste product of photosynthesis is oxygen that the plant releases in the environment.
Plants also performs cellular respiration and in the process of cellular respiration the waste product is carbon dioxide.
Hence, the waste products are carbon dioxide and oxygen.
Genetic variation determines inherited differences between individuals . Our height or eye color are inherited from our parents, but our phenotype is also affected by environment such as the food we eat (diet), drugs we take, toxins surrounding us, climate, location, culture, physical accidents and lifestyle.
A person may inherit a gene to be tall, but poor diet during childhood may cause stunted growth.
A Plant may have the potential for strong growth, but if the soil does not have sufficient minerals, the plant may hardly grow at all.
a
Cell A shows phagocytosis and Cell B shows diffusion
b
Cell A shows pinocytosis and Cell B shows osmosis
c
Cell A shows active transport and Cell B shows diffusion
d
Cell A shows dehydration synthesis and Cell B shows the circulation
Cell A shows active transport and Cell B shows diffusion in the given diagram.
What are the types of transport methods?
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Answer:
C I think
Explanation:
B) Many animals are captured or killed by poachers, significantly reducing their numbers.
C) Viral epidemics that break out in human populations spread to animals in the ecosystem.
D) Factories cause a significant rise in temperature in the forests, endangering many species.
Answer: A) Urbanization leads to deforestation and loss of habitat for many species.
Explanation:
Urbanization is the main reason for the exploitation of the rain forests which has lead to the extinction of species used to be residing in the forests ecosystems. Following are the factors which are responsible for such disaster with the expension of urbanization:
1. Infrastructure: The land is the main requirement which is responsible for the exploitation of rain forests. The large area is required for the accommodation of the large human population, construction of roads, highways and bridges. This has replaced many habit-ant animals from their native land and also leads to extinction due to ecological disturbance.
2. Increasing needs of food, herbs and wood: Many species of wooden trees could be found in the rain forests which have now extincted due to increasing demand for wood. The herbs have been wiped up for the preparation of medicines and drugs. The large number of tree populations are also exploited due to availability of fruits, and vegetables.
3. Wildlife trafficking and hunting: Some of the animal species have been included in the list of endangered species due to their use for commercial selling of horns, hives and other valuables.
b. gender
c. species
d. temperature