A procedure that places an oocyte and sperm in a culture dish, allows a few cell divisions, and then places the resulting very early embryo in the oocyte donor's uterus is

A) IVF.

B) intrauterine insemination.

C) surrogate insemination.

D) GIFT.


A) IVF.

Biology & Microbiology

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The chi-square value is the sum for all progeny classes of (observed-expected)2/expected. Using the chi-square test for goodness of fit, calculate the chi-square value to test the null hypothesis that genes C and D are unlinked. What is the chi-square value?

A dihybrid testcross is made to determine if genes C and D are linked. The results are shown in the table.





A) 0
B) 0.0576
C) 10.8
D) 14.4
E) cannot be determined

Biology & Microbiology

C4 plants divide photosynthesis between two types of cells: the mesophyll and the ________ cells

Fill in the blank(s) with correct word

Biology & Microbiology

A skin snip is performed, and microfilariae with tapered tails, no nuclei, and unsheathed are microscopically observed. The recommended therapy for this infection is:

a. ivermectin. b. diethylcarbamazine. c. antihistamines. d. mebendazole.

Biology & Microbiology

After a baby is delivered, what else is expelled from the female's uterus?

a. placenta b. uterine lining c. primary oocytes d. oxytocin e. corpus luteum

Biology & Microbiology