Answer:
X linked dominant.
Explanation:
The autosomal disease are not specifically affect the individual sex and may affect both the males and females in nearly equal proportion. X linked disease affects to the specific sex only whether male or female.
Bob has the skin disease and her wife is normal. All there sons are normal but daughters are affected by the disease. This might occur that the disease gene is located on the X chromosome of Bob. This X chromosome is transferred to all the daughters and daughters shows the disease that means the gene of the disease is dominant in nature.
Thus, the correct answer is option (b).
Answer:
C) redundant organs present in an organism, which have been functional in the organism’s ancestors
Explanation:
Vestigial organ are bodily organs which are retained in the evolution however over a long period of time have lost their original functions and become reduced in size due to changes in the living habits. They serve as the evidence of evolution. They include caecum and appendix; coccygeal vertebrae
D-walls and doors would represent the cell membrane
This pedigree doesn't show an autosomal dominant trait because 3,4 are carriers, passing the gene to their offsprings but don't manifest the phenotype. This pedigree can represent an autosomal recessive gene based on what I just mentioned. We know that this is an autosomal trait because it seems to affect both genders equally.
In this case two kinds of selection might be applicable to this situation. For example, if the population of grey mice are more exposed to predators due some materials used in the dam then that would be an example of disruptive selection. But if the population of gray mice is less visible to predators and if the population grow, then it will be an example of Stabilizing selection. Basicaly meant, this type of situation is also known as codominancy or codominant type.
