(i)How is sex determined in man? (ii) Differentiate between sickle cell anemia and sickle cell trait. (iii) Explain why people with sickle cell trait have an adaptive survival advantage...

      

(i)How is sex determined in man?
(ii) Differentiate between sickle cell anemia and sickle cell trait.
(iii) Explain why people with sickle cell trait have an adaptive survival advantage...

  

Answers


Belinda

Males have two dissimilar chromosomes X and Y/heterogametic;
Females have two similar chromosomes X and X/homogametic;
Male gamete/sperms have either X or Y chromosome, while all ova have X chromosome;
If a sperm with X fuses with an ovum a female is formed and if a sperm with Y fuses with an ovum a make is formed;
Sickle-cell trait is heterozygous while sickle cell anaemia is a homozygous condition;
People with sickle cell trait are resistant to malaria; because the plasmodium cannot survive in sickle shaped cells.
adhixbelly answered the question on September 20, 2017 at 09:40


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