Select the correct sequence of animal
developmental events.
a. fertilization >>> cleavage >>> organ
formation >>> growth of tissues
b. fertilization >>> cleavage >>> gastrula >>>
organ formation
c. fertilization >>> gastrula >>> cleavage >>>
organ formation
d. fertilization >>> organ formation >>>
gastrula >>> cleavage
e. fertilization >>> organ formation >>>
cleavage >>> gastrula
B
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The affected children in the family above are much more prone to cancer than their unaffected siblings. Which of the following could be true of the affected children?
What will be an ideal response?
A homologous pair of mitotic chromosomes will possess _______ alleles for each locus.
A. 2 B. 4 C. 8 D. 1 E. 50% of the
Which type of defense mechanism is not classified as the first line of defense?
a. Chemical barriers b. Skin c. Mechanical barriers d. Physical barriers e. Leukocytes
Extranuclear genes show a biparental inheritance pattern in yeast since
A) progeny from diploid vegetative growth can have the phenotype of the dominant phenotype. B) progeny from diploid vegetative growth can have the phenotype of the ? parent. C) progeny from diploid vegetative growth can have the phenotype of only the a parent. D) progeny from diploid vegetative growth can have the phenotype of either the a or the ? parent.