Answer:
Genetic drift
Explanation:
Based on the information given here, the observed genetic variation is most likely an example of Genetic drift .
Genetic drift is the variation in the relative frequency of different genotypes in a small population, owing to the change disappearance of particular group of genes as individuals die out do not reproduce.
The above mentioned information indicate a typical example of Genetic drift
Gizzard
Birds such as chicken, doves and others, and earthworms have gizzard which are responsible for storing and softening the consumed food in their digestive tract. The gizzard serves as the grinder of these food in preparation of the absorptive phase of the G.I tract.
In the X and Y chromosomes. 50% of your mom's genes are in the X chromosome, and 50% of your dad's in the Y.
Well, ask yourself, "Do I try hard enough?" "Was it the best I could do?" And well if the answer is yes, then you have nothing to stress out about too much. Maybe talk to your teacher and ask for extra credit. Get tutoring. Talk to a guidance counselor. If none of that helps, well then you're just not the best at the subject, but just try your best. In the future, you won't even remember about all those grades! Coming from a 6th grader, the beginning of the year was super hard. I'm not the best at math, but I'm very good at Language Arts. Everyone has their own weaknesses and strengths. Don't worry about it.
