What is the probability that an offspring will have an ss/RR genotype from a cross of two Ss/Rr individuals?
A. 25%
B. 6.25%
C. 3.12%
D. 12.5%
B
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Some green algae exhibit alternation of generations. All land plants exhibit alternation of generations
No charophytes (stoneworts) exhibit alternation of generations. Keeping in mind the recent evidence from molecular systematics, the correct interpretation of these observations is that _____. A) charophytes are not related to either green algae or land plants B) plants evolved alternation of generations independently of charophytes C) alternation of generations cannot be beneficial to charophytes D) land plants evolved directly from the green algae that perform alternation of generations E) scientists have no evidence to indicate whether or not land plants evolved from any kind of alga
Frances Redi disproved spontaneous generation by designing a controlled experiment where he placed raw meat in six (6) jars. He covered three jars with a fine net and left three jars open. After a short period, maggots appeared in the open jars while the covered jars had no maggots. In your opinion, what additional controls and measurements could Frances Redi have done to prove that rotting of raw meat is caused by live bacteria?
What will be an ideal response?
Which of the following organisms belongs to the group represented in box 1?
A) giraffe
B) tree
C) decomposing bacteria
D) leopard
Which unique structure do archaea use to attach to surfaces?
A. Hami B. Glycocalyx C. Peptidoglycan D. Fimbriae