Answer:
Option B, Dd and Dd
Explanation:
It is given that deafness is a recessive trait.
Let the recessive trait be represented by "d"
Normal hearing is a dominant trait and let it be represented by "D"
It is given that Dr. Smith's parents have normal hearing , hence they can have genotype -
either Dd X DD
Or Dd X Dd
but Dr. Smith has an inherited form of deafness , thus his genotype would be "dd". Considering the genotype of Dr. Smith , his parents would be having genotype Dd and Dd.
Thus option B is correct.
Answer:
The statement 2 best describes the next process taking place within the cell.
Explanation:
A kind of cell division, which is characterized by the differentiation of a single parent cell into two daughter cells that comprise equivalent chromosomes number is termed as mitosis or reductional division. In the given case, the arrangement of chromosomes at the equatorial plate indicates that the cell is currently in the metaphase stage of mitosis.
After going through the stage of metaphase, the cell moves into the anaphase stage. In the anaphase stage, the sister chromatids begin to segregate and move towards the opposite pole of the cell. Thus, statement 2 correctly illustrates the next stage of the cell.
The answer is A., all living things are made up of cells.
People with blood type AB cannot donate to other groups. Negative blood types can donate to blood with and without the Rh factor. Thus it is O-
