Ablastocyst is a
a. cluster of cells surrounding a developing egg in the uterus
b. membrane that surrounds and protects a growing embryo in the uterus
c. growth that conform in the wall of the fallopian tubes
d. hollow ball of cells formed after a fertilized cell undergo cell division

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Using meiosis, the sporophyte produces spores that are .

The climate on the leeward side of a mountain differs from that on the windward side mostly in