The correct sequence for the stages in development from conception to birth is

A. zygote, embryonic stage, preembryonic stage, fetal stage.

B. fetal stage, zygote, preembryonic stage, embryonic stage.

C. preembryonic stage, embryonic stage, zygote, fetal stage.

D. zygote, preembryonic stage, embryonic stage, fetal stage.

E. fetal stage, embryonic stage, preembryonic stage, zygote.


D. zygote, preembryonic stage, embryonic stage, fetal stage.

Biology & Microbiology

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Generation of new bacillus-shaped cells starts with one cell elongating and terminates when split into two separate bacilli

Indicate whether the statement is true or false.

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Define the Oparin-Haldane hypothesis and explain how it has been tested in a laboratory

What will be an ideal response?

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Mitotic divisions reduce the number of chromosomes found in daughter cells

a. True b. False

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The primary difference between the probit and logit model is the:

A. choice of distribution for the unobservables. B. probit model uses a latent variable convention that the logit model does not. C. probit model identifies causal effects, while the logit model identifies correlations. D. probit model suffers from a heteroscedasticity problem while the logit does not.

Biology & Microbiology