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
Knowing one's own history provides a group with a sense of unity as it unites them to know how their past brought them together through their past hardships.
It brings a sense of unity as people can feel they share a history together and have something to relate to, sort of like a nationalistic feeling in a sense.
Therefore, knowing one's history provides a group with a sense of unity as it allows them to feel as though they have something to relate to and have a past that makes them them, in a sense.
Hope this helps!
The beneficial uses of bacterial toxins in medicine are more and more used lately. For example, Botulinum toxin is a toxic protein produced by the bacterium Clostridium botulinum which has paralytic effects (injection of this toxin into muscle relax specific muscles). Botulinum toxin accomplishes his effects on the neuromuscular junction where he prevents the release of the neurotransmitter acetylcholine (Ach). Utilization of this toxin is in the treatment of various muscle spasms. It is also used in the treatment of migraines. Diphtheria toxin is also one of the toxins used for medical purposes for the treatment of cutaneous and non-Hodgkin T-cell lymphomas. <span>Some bacterial toxins can be used in the treatment of tumours. For example, immunotoxin, which is protein made by fusion of modified antibody and toxin.The antibody binds to an antigen on the target cell, the toxin then enters via endocytosis and kills the cell. Commonly used bacterial toxins in immunotoxins are Diphtheria toxin and the Pseudomonas exotoxin.</span>
The answer is Integrated Pest Management. IPM involves integrating
practices in an effort to drastically reduce the population of a pest, such as
mosquitos, to below the economic injury level (EIL) and reduced risks to human
health population. IPM practices should be safe and involve the control the
pest rather than eradicate.
This process is is called controlled breeding. This allows the farmer to breed the offspring in such a way that only the genes that he wants present are produced in the offspring.
