If the earth's differentiation were any different, its gravitational pull and might have been affected.

The sickle-cell allele, which is recessive, causes anemia but confers resistance to malaria in individuals who possess it. Howev

masha68 [24]

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.

3 0

4 years ago

This Spanish mission reduced the need for Native Americans to trade with the French.

Nata [24]

<span>Jesuit missionaries

Hope this helped</span>

6 0

3 years ago

what are structures without a present-day function called? a. homologous c. vestigial b. analogous d. extinct

Lesechka [4]

C. Vestigial.

A vestigial structure example in out bodies is the Appendix. We don't really need it, it just kind of "hangs out" in our bodies. We evolved to not need it.

I hope this helped! Let me know if it did not!
I hope you have a fantastical day!!!XD

4 0

4 years ago

Animal cell map to understand how cells function as the fundamental unit of life, you must first become familiar with the indivi

kodGreya [7K]

Answer:

a-synthesizes lipids

b-assembles ribosomes

c-defines cell shape

d-produces secretory proteins

e-modifies and sorts proteins

f-digests proteins

g-generates ATP

Explanation;

Some organelles and structures that make up the cell include; mitochondria, ribososmes, cell membrane, endoplasmic reticulum, golgi apparatus, lysosomes, among others,

-These organelles play individual roles in the cell; For instance;

Mitochondria-generates ATP

Lysosomes; digests proteins and worn out organelles

Golgi apparatus; modifies and sorts proteins

Ribosomes; Produces proteins

Endoplasmic reticulum; sythesis of lipids

Cytoskeleton; it gives the cell its shape

Nucleolus; manufactures and assembles ribosomes

etc.

7 0

3 years ago

Does right, obtuse, or straight?

Norma-Jean [14]

Answer:

i think youre missing something

Explanation:

6 0

3 years ago