Variations can be genetic or environmental, the traits are passed from one generation to other generation of snail is from from both parents to offspring and through the environment.
The correct answer is C.
Explanation:
Genetic variation in an organism is passed to the offspring by its parents.
environmental variation is the the result of different environment with which individual adapt.
Natural selection is a process in which a suitable trait which is well adapted to the environment is passed on tho future generations.
Genetic variation is the change in DNA or gene of the individual trait. The tree snails having different pattern in their shells is due to the habitat they are living in.
The snails which have well adapted to the environment are able to reproduce and pass on the traits to their progeny. The variation is due to the traits passed from parents through the environment also.
A very acidic pH level is 1, and a very basic pH level is 13.
<span>The most appropriate choice of needle for someone of this size is a 1.5 in, 22 gauge
needle. It is important for the needle to be 22 gauge so that it is an appropriate thickness to be injected into the muscle tissue.</span>
Answer:
Increases in atmospheric carbon dioxide are responsible for about two-thirds of the total energy imbalance that is causing Earth's temperature to rise.
Explanation:
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Answer:
Human males much more likely than human females to inherit the recessive condition hemophilia because it follows X-linked recessive pattern.
Explanation:
Actually hemophilia is an X-linked recessive disorder i-e the defective genes are located on the X chromosome (sex chromosome) and are transmitted through it. As males have only one X chromosome (inherited from mother), one altered copy of the gene in every cell cause this disease.On the other hand females have 2 X chromosomes thus this disease is rare in females.
