All of the above is the answer
The correct answer is option (A) it is a sex-linked dominant allele.
Pedigree analysis helps to determine the different modes of inheritance like the dominance, recessive, sex-linked, autosomal, mitochondrial and others. It helps in knowing the probability of affected offsprings in a cross.
In a sex-linked dominant inheritance, the father passes their X chromosome to daughters only. Of his daughters, 100% percent will have the inheritance as daughters inherit their father's X chromosome. Mother passes her X chromosome to both the sons and daughters or it is passed on to the offspring irrespective of their gender. Of her sons and duagters, 50% will have the inheritance.
In the pedigree of a particular inherited trait given above, the father passes the trait in the first generation to all his daughters and none of his sons. These daughters to half of their children regardless of the gender. Hence, it is a sex-linked dominant allele inheritance.
Answer:
Although these two may seem somewhat similar, in the broad view, they are two highly different terms.
Mutualism is the <u>equally-beneficial</u> state of the relationship between two organisms. This involves both of the organisms getting their needs sufficed and maintaining a healthy relationship.
Ex. Bee receiving nectar - Flower getting pollinated.
(Hint: <u>Mutual</u>ism - Mutually/equally good for both.)
Parasitism is the <u>solo-beneficial</u> state of the relationship between two organisms. This involves only one of the organisms getting their needs sufficed, thus hurting the other organism in the process.
Ex. A flea gets food, shelter, and protection. - Dog feeling itchy, getting blood drawn from themself, and weakening their immune system to foreign substances.
(Hint: <u>Parasit</u>ism - One organism acts like a "parasite" to another.)
Answer:
Natural selection, the keystone of evolution, can switch direction in a matter of months, a novel experiment on lizards reveals.
