11 Jun What is the mutation in sickle cell anemia
Question
Question 35.
What is the mutation in sickle cell anemia?
The sickle cell allele is HbS while the normal hemoglobin allele is HbA. Give the genotypes of:
an individual with sickle cell anemia
a heterozygote
an individual who is a sickle cell free homozygote.
Which of these individuals would be susceptible to malaria?
Question 36.
What are the 4 types of organic macromolecules? Discuss the characteristics, examples and functions of each. Be sure to mention the monomers or components.
Question 37.
Off the coast of California, Kelp fronds are surrounded by sardines and provide food and cover for a wide range of marine animals.
Sea urchins are abundant bottom-dwelling grazers and scavengers. Kelp are tough and fast-growing, but urchins (animals related to starfish) can eat them with their hard rasp-like mouth parts. Urchins are protected by their prickly spines and a hard outer shell. In the absence of factors controlling their abundance, urchins can increase to very high densities, producing what are sometimes called “urchin barrens” devoid of kelp. Unlike kelp forests, urchin barrens do not support much life.
Sea otters are uniquely suited to eating the urchins. With their dexterous paws and long incisors, they can crack open the urchins, eating the soft flesh inside. Sometimes they even use rocks as tools to crush tough prey.
Identify the foundation species and the keystone species.
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