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Females have two X _______________ and males have one X and one Y

asked Mar 12, 2018

Biology
middle-school

1 answer

4 votes

140k views

Which type of pronoun is bolded in the following sentence? Who took my paintbrush?

asked Aug 14, 2017

English
high-school

1 answer

2 votes

69.1k views

Which cells activate helper T-cells by antigen presentation? B-cells B-cells B. Bacteria C. Macrophages D. Plasma cells

asked Mar 20, 2016

Biology
high-school

1 answer

5 votes

35.7k views

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