Biology, 28.11.2019 00:31 happy121906
Ascientist tries to mate the two similar-looking fruit flies drosophila melanogaster and drosophila simulans. he finds that they are unable to produce viable offspring. what kind of evolutionary barrier could this be?
a. chromosomal
b. postzygotic
c. physical
Answers: 3
Biology, 22.06.2019 05:00
Identify the examples in which sam interacts only with natural resources
Answers: 2
Biology, 22.06.2019 05:10
7. describe two strategies that parents can use to cope with stress. 8. describe the three types of childcare available to families. 9. what can parents do to be more involved in their children's education at home and at school? 10. which factors should a parent consider when choosing a childcare option?
Answers: 1
Biology, 22.06.2019 15:20
Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white
Answers: 2
Ascientist tries to mate the two similar-looking fruit flies drosophila melanogaster and drosophila...
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