2. Carrie is studying the genes of two fruit flies in her lab. She knows what alleles they have. She
wants to know the potential combinations of
alleles their offspring could inherit. Which of
these choices would help Carrie identify the
potential combinations?
A. an allele
B. a carrier
C. a pedigree
D. a Punnett square
SCIENCE QUESTION

a bad leader      

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.

answer; ///he could not explain why the continents drifted;

answer; validity;