The correct answer is option B. Genotype AA, phenotype-Unaffected.
The cystic fibrosis is a condition caused by the inheritance of the two recessive allele, It is an autosomal recessive disease.
In the given case, the parents are carriers, and the carriers are always heterozygotes. Hence, the phenotype of the both parent should be Aa. A possible cross of the parents is shown in the figure below.
In case, the progeny have a single dominant trait, the child would not be affected, but will be a carrier and can pass the disease to offspring. In case, the child inherit both the dominant allele (homozygous dominant) from the parents, then he/she would be unaffected. In case, the phenotype of the child is homozygous recessive then it would be affected.
Always point the open end of the tube away from all people because the chemical is dangerous for human health and skin.
If we heat a substance or chemical in a test tube, we should hold it away from people because may be it can explode and the chemical split on the body that cause serious problems in people. We have to handle laboratory procedures very carefully because the chemicals are not good for health and can cause serious diseases in humans and can damaged the skin very badly so we can conclude that the open end of the test tube should be placed away from the people.
brainly.com/question/24390373
A cell membrane can me compared to a wall, one that is flexible and malleable but strong enough to repel unwanted things from the cell. it also keeps the cell together in its shape and form
In light of the examination of philip reno, early hominins show decreased sexual dimorphism, which is proof for participation and logical for pair bonding.
<h3>What do you understand by Pair bonding?</h3>
Pair bonding is a high level trademark and may expect an essential part in age, and moreover in individual and species endurance.
A pair bond is the strong enjoying that makes in a couple of creature bunches between a couple containing a male and female, or on occasion as an equivalent sex mixing, perhaps provoking conveying any kind of family down the line or possibly a well established bond.
Early hominins showing decreased sexual dimorphism is a proof of agreeable guys or collaboration and reasonable from pair bonding, based from the exploration of Philip Reno.
Pair bonding is a characteristic that developed and can assume a basic part in multiplication, and in individual and endurance of a species.
For more information about sexual dimorphism, refer the following link:
brainly.com/question/4316806
#SPJ4
