The answer to this is C because humans don't have cell walls and if you are looking at an onion it has a cell wall because it is a plant.
Answer:
Ice cream isn't exactly a meal but when you go through the process of making it, it starts out as a liquid then becomes solid. Most people who've made ice cream as a kid have done the experiment with 2 Ziploc bags, kosher salt, heavy cream, vanilla, sugar, and milk. And of course the ice. You begin to get a solidified figure once you mix everything in the first bag then surround that bag with another bag filled with the ice and salt and shake. So this would count as physical change.
If you cook a steak it'd go through a chemical change. The proteins in the meat begin to break down due to the heat in a skillet, grill, pot, etc. This meat also goes through a physical change. The color changes and so does the texture. (Not that I've ever had raw meat. Bleh!)
Hope this helped!
D. Bacteria because “bacteria” is actually a domain itself
Answer:
True
Explanation:
The color of the baby's eyes is influenced by the genetic inheritance (of the genes transmitted by the mother and father) and the amount of melanin (brown or black pigment whose type and amount is encoded in the genes) found in the iris.
Eye color is controlled by at least three genes, although researchers still only understand the role of two of them. Determining eye color is an extremely complex process and there are several conditioning factors and genetic combinations that can influence the final color.
The more melanin, the darker the color of eyes, skin and hair. If parents have both brown eyes, it is natural for their children to have the same color. However, there may be a genetic influence from an ancestor and the child expressing a different color.
If the presence of melanin in the iris is reduced, the baby will have blue eyes, even if father and mother have brown eyes. If the presence of melanin is higher, the eye color will be green or hazel. When there is a large production of melanin, the eyes are brown, predominant color over green or blue and therefore more common. The least common color is green.
Answer:
The correct answers are:
1 a. X^RX^r - red eye color female
b. X^RX^R - red eye color female
c. X^RY - red eye color male
d. X^rY - white eye color male
e. X^rX^r - white eye color female
(2nd part can also be answered by above)
Explanation:
It is given that the eye color is a sex-linked character where Red eye color is dominant over white eye color in fruit flies. Sex-linked characters are the character that is a similar inheritance pattern except in the case of the male as there is a Y chromosome that does not carry the gene for the eye color trait so the trait will depend on the allele present on a single X chromosome in males.
On the basis of this, the sex and color of eyes will be:
a. X^RX^r - red eye color female - Dominant character will mask the recessive white color and two copies of X which means female.
b. X^RX^R - red eye color female - both copies are dominant so red-eye color will be expressed and two copies of the X chromosome that means female
c. X^RY - red eye color male - One X and one Y chromosome that means male and only dominant allele present so red eye color.
d. X^rY - white eye color male - Only allele that is present is recessive with one Y chromosome that means male with white eye color.
e. X^rX^r - white eye color female - two X chromosomes with recessive allele which means white eye color female.
