In prophase I of spermatogenesis, there are ____ chromatids
a. 92
b. 23
c. 46
d. half as many (as in somatic cells)
e. twice as many (as compared to mature sperm)
A
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The resulting 6-carbon molecule splits into two molecules of 3-carbons, each called
What will be an ideal response?
The energy in chemical bonds is a type of ___________________ energy
Fill in the blank(s) with correct word
Tomatoes carry a gene called fw2.2 that encodes a protein made during early fruit development?the job of which is to repress cell division
Additionally, researchers have identified a second gene called fas that controls the number of compartments in the mature fruit. Artificial selection leading to the production of very large tomatoes has apparently capitalized on ________. A) alleles associated with low production of the repressor protein and an increase in the number of fruit compartments B) alleles associated with high production of the repressor protein and an increase in the number of fruit compartments C) alleles associated with low production of the repressor protein and a decrease in the number of fruit compartments D) alleles associated with high production of the repressor protein and a decrease in the number of fruit compartments
Which of the following is NOT a major type of stimulus that triggers endocrine glands to manufacture and release hormones?
A) enzymatic B) humoral C) neural D) hormonal