Which types of phenotypic ratios are likely to occur in crosses when dealing with three gene pairs for which all the genotypic combinations are of equal viability?
A) 12:3:1, 9:7
B) 1:2:1, 3:1
C) 2:3, 1:2
D) 1:4:6:4:1, 1:1:1:1
E) 27:9:9:9:3:3:3:1
Answer: E
You might also like to view...
While in the biology lab, you observe, in both plant and animal cells, that some single cells are splitting into two daughter cells. You also observe that the splitting cells are still connected by a contractile ring and the cytoplasm has started to divide. You conclude these cells are undergoing
A. metaphase. B. mitosis. C. cytokinesis. D. anaphase. E. binary fission.
You are travelling and order a salad and bottled water. You later are feeling ill. What is your best guess?
A. Enterohemorrhagic E. coli B. Vibrio vulnificus C. Enterotoxigenic E. coli D. Clostridium botulinum
You bite into your favorite late-night studying snack, mushroom cheese pizza, and think to yourself, "What exactly am I eating?" Which of the following parts of a fungi are smothered with cheese on your pizza?
a. an aggregation of spores formed into a club-shaped structure b. the extensive grouping of hyphae into the mycelium c. a bunch of yeast cells all packed together d. the short-lived reproductive structure called a fruiting body e. the non reproductive thallus
The oxygen-dependent reactions required for cellular respiration were originally thought to occur in a linear pathway. By using a competitive inhibitor for one enzyme in the pathway, investigators discovered that these reactions occur in a cycle
What compound served as the inhibitor? (a) malonate (b) malate (c) fumarate (d) succinate