How does a prokaryotic cell differ from a eukaryotic cell?
a. A prokaryotic cell has no membrane-enclosed organelles.
b. A prokaryotic cell has a plasma membrane.
c. A prokaryotic cell contains organelles.
d. A prokaryotic cell has a nucleus.
e. A prokaryotic cell has DNA.
a
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True or false: All changes in gene sequence are mutations, but not all mutations decrease or increase in frequency over time
A. true B. false
Select the pairs of organism characteristics that are homologous structures. Check all that apply.
_____ cactus spines; tree leaves _____ human hand bones; whale fin bones _____ bat wing; butterfly wing _____ octopus eye; mouse eye
A ____ individual is always part of a testcross
a. heterozygous b. homozygous recessive c. homozygous dominant d. self-fertilized e. dihybrid
Photosynthetic organelle In what organelle does photosynthesis take place in algae and plants?
a) chloroplast b) mitochondrion c) ribosome d) chlorophyll e) lysosome