Freida’s claim is accurate only under certain conditions.
<u>Explanation:</u>
Freida claims that she can determine which sex chromosome was donated by the male parent and which was donated by the female parent. This claim cannot always be valid. A female parent has homozygous sex chromosomes. Both the sex chromosomes of a female is X.
A male has one X chromosome and one Y chromosome. In reproduction a female parent always donates an X chromosome. A male parent may donate either an X or a Y chromosome. This determines the sex if the child.
If an X chromosome is donated the child will be girl with the genotype XX and if the Y chromosome is donated the child will be boy with genotype XY. Thus only in the case the child is a boy can we correctly determine which sex chromosome was denoted by the male parent and female parent.
If the child is a girl with both X chromosomes we cannot determine which X chromosome was donated by father and which was donated by mother because both are X.
Mammals are relatively complex and intelligent animals.
They give birth to live offspring, have hair or fur on their bodies, and possess mammary glands that produce milk for their young. They breath air with lungs and have ears that stick out instead of the earholes, such as what reptiles and birds have.
Stem cells are known to be the type of cell that goes through the determination process. This process involves the cell to undergo a very stable change where it's perfectly accurate to really happen. Stem cells are known to be fully capable of that once it activates.
Hey there,
Answer: Alcohol fermentation is done my using yeast and other kinds of bacteria. These mico-organisms convert sugars into ethyl alcohol and carbon dioxide.
Hope this helps :D
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