Answer:
The probability of their first child being colourblind is 1/4
Explanation:
Red-green color blindness is an X-linked recessive disorder.
A woman with normal vision whose father was colorblind has children with a man with normal color vision.
In an X-linked condition, the males only need to get one copy of the affected allele to have the condition and this copy is also inherited by a female offspring.
So in this case, the woman receives the affected recessive allele copy from her dad but since she still has normal vision, she received the normal copy from her mom so she is heterozygote for the trait.
The woman with normal color (XRXr) has a father who is color blind (XrY) has children with a normal man (XRY)
The cross would be
XRXr x XRY
XR Xr
XR XRXR XRXr
Y XRY XrY
Probably of having an affected child is 1/4. Thus, the probability of their first child being colourblind is 1/4
WIND ENERGY drives surface ocean currents
Answer:
b. can no longer undergo cell division.
Explanation:
Terminally differentiated cells are those cells completely specialized in their functions that have lost their ability to proliferate. They are cells that have a unique, very specific, function, whereas undifferentiated cells do not have specialized functions that serve to replace old and dead cells. Examples of terminally differentiated cells include skin cells derived from epithelial stem cells, red blood cells and white blood cells generated from hematopoietic stem cells, etc.
The scientific method can best be described as a plan or set of procedures.
It’s E,two independent linear equations,each having at least one of the variables
