A polar body
A) is a structure found at one pole of a mature egg.
B) can be fertilized by a sperm.
C) nourishes the egg until it is fertilized.
D) is formed at the same time as a primary oocyte.
E) is a discarded set of chromosomes.
E
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In addition to mutation, what other mechanism allows for new genetic information to be introduced into a population? Explain your answer.
What will be an ideal response?
The red blood cells of people with sickle cell anemia have abnormal shapes due to ____
a. hemoglobin molecules with mutant beta globin subunits sticking together and forming long fibers in the cytoplasm b. destruction of the hemoglobin molecules c. loss of hemoglobin through leaky cell membranes d. the attachment of phosphate groups to the hemoglobin molecules e. the binding of methyl groups to the heme group of the hemoglobin molecule causing desiccation of the cells
What is present in both the light-dependent and light-independent reactions?
a. ATP b. oxygen c. glucose d. rubisco e. water
Being a heterotroph means ________
A) making your own food from the sun B) making your own food from oxygen C) obtaining your food by eating other organisms D) obtaining your food by photosynthesis