tt. I need 20 characters to answer so im gonna babble on until i re- oh wait i reached it already (Oh and a little tip is that if there is a capital anywhere then it is a dominant trait. Recessive has to be both lowercase, or else it would be dominant.)
Superginats are types of starts, characterzied by being the biggest starts.
When supergiants die (run out of hydrogen) the originate a supernova than they either become a neutron star or a black hole:
→ A black hole is a place in space, in timepsace to be more precise, that is most commonly known for its dark colour and for its drastical gravitational influence.
→ A neutron star is a very little but dense star, composed by neutrons and turns out to be the core of the dead supergiant.
Hope it helped,
BioTeacher101
Well, natural variation provides the raw material for natural selection,which in turn leads to evolution
Answer:
A. the heterozygote advantage
Explanation:
Heterozygote advantage is the condition where the heterozygous individual has higher relative fitness than both homozygous dominant and homozygous recessive individual. This means that the heterozygote individual has higher chances of surviving than both the homozygous counterparts. Sickle cell anemia is a recessive inherited disorder in which oxygen carrying hemoglobin has an abnormal structure. Hence, the resultant RBCs are not spherical but have crescent sickle shape. The oxygen carrying capacity of such RBCs is drastically reduced but they are unaffected by malarial parasite due to their abnormal structure.
- A person with both the recessive genes for sickle cell would not be able to survive due to insufficient oxygen transport in body.
- A person with both the dominant genes would be free of sickle cell anemia but in case of malaria would not be able to survive as the normal RBCs would be hijacked by the parasite.
- A hetrerozygote would survive both in malaria and sickle cell condition since he has enough normal RBCs for oxygen transport but also has sickle cell RBCs which are unaffected by malarial parasite.