Hemophilia is a genetic disorder that inherited by X-linked recessive pattern. A daughter needs 2 genes to have the disease(or 1 gene to become carrier) but a son only needs to get 1 defect genes from his mother(X gene in male must come from mother). If Xh defected gene and X normal genes, the <span>punnett square </span>would be:
Father(XY)
X Y
Mother Xh XhX XhY ------>XhX= carrier , XhY= sick
(Xh X) X XX XY ------>healthy
D.
A fixed allele is homozygous within a population so D should be the correct answer.
Hope this helps!
Answer:
picky and typical selection.
hope it helps!!!
Answer:
The correct answer is option 3. a nucleus.
Explanation:
The first genetic material present in the early organisms were RNA which was present in the microscopic organisms back then 3.5 billion years ago which means it is normal to have RNA in such microfossils chemical analysis.
Since, the nucleus was not present in early life forms of prokaryotes like bacteria. so, it is unusual to find nucleus in the fossils of stromatolite rocks.
Thus, option III is the correct answer.
Answer:
Parasitism.
Explanation:
Parasitism is the relationship that is present between Plasmodium and humans because one organism takes benefit from the other whereas the other get harmed by the other. In Plasmodium and humans relationship, human gets harmed from the mosquito by having malarial disease, while on the other hand, mosquito is benefitted by sucking of blood which is a food source for mosquitoes.
