Answer:
The mentioned characteristics of variability are witnessed because of the phenomenon known as X chromosome inactivation in heterozygous females. As females possess two X chromosomes, they actually should not possess any color blindness.
The phenomenon of X-chromosome inactivation takes place in a random manner at the time of embryo development. During this only one X chromosome is inactivated. If the chromosome comprising the defective gene is inactivated, the individual will possess normal vision.
If the chromosome comprising the usual gene gets inactivated than the individual will be color blind. In the given case of female, X inactivation took place in one eye. The inactivation of normal alleles has taken place and thus she possesses normal vision with one eye and is color blind in the other eye.
Answer:
Why do you need to start with 4x in magnification on a microscope? The 4x objective lens has the lowest power and, therefore the highest field of view. As a result, it is easier to locate the specimen on the slide than if you start with a higher power objective
Explanation:
The fact that biologically similar organisms have similar DNA and proteins supports the concept of
organic evolution. The term organic evolution describes the<span> process of formation of different types of organisms.</span>
<span>These similar structures that related species have inherited from common ancestor are called homologous structures.
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WELL ITS SURVIVAL OF THE FITTESS IF THEY DONT EVLOVE FAST THEY WILL ALSO BECOME EXTINCT
