In a particular plant, long stem is dominant over short stem. This same plant may produce red flowers or white flowers with this trait showing incomplete dominance. Cross a heterozygous long stem pink plant with a heterozygous long stemmed red flowering plant.

Explain how scientists use geologic time to determine the age of landforms.

2. which is the last step in the scientific method?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.