The binomial name will include the genus and species in that order. Both are italicized with the first letter of the genus being capitalized and the species being all lower case. For example:
Emperor Penguin = Aptenodytes forsteri (can’t italicize on this app but the scientific name would be)
The correct answer is B. Sensitive period
Explanation:
In development, the sensitive period refers to a lapse of time in which organisms are more susceptible or receptive to stimuli and therefore during this time there can be great advances in development. Additionally, different from critical periods sensitive periods do not imply irreversible consequence if the stimuli are not presented. For example, in human beings from birth to the age of 6 years, children are more receptive to learn and acquire certain skills such as learning a new language if exposed to it and therefore this can be considered as a sensitive period. Considering this, it can be concluded the definition presented refers to the Sensitive period.
D.
A fixed allele is homozygous within a population so D should be the correct answer.
Hope this helps!