Complete question: A phylogenetic tree shows that birds and crocodiles share many features. A hypothesis based on this tree predicts that these features are present in a common ancestor. Which of these predicted traits is supported by fossil evidence?
A) four-chambered heart
B) singing for territory
C) eggs and nests
D) singing to attract mates
Answer: (c) eggs and nests
Explanation:
A hypothesis based on phylogenetic tree shows that birds and crocodiles have ancestral connection. Fossil evidence shows that their common ancestor exhibit oviparity as a means of reproduction (i.e. laying of eggs and embryo develops within the egg), and also housed their eggs in the nest for protection against predators and other important reasons.
Answer:
2, phenotype
traits are determined using genetics
1. A book sitting on top of a table
2. A soccer ball rolling on the ground
3. A person driving a car to a stop
Answer:
During the process of translation, the codon UAC sets up the open reading frame in the mRNA (messenger Ribonucleic acid). The codon UAC corresponds to ATG in the DNA. It codes for the amino acid methionine.
Explanation:
The determination of the open reading frame is important in the process of translation and protein formation. The start and stop codons determine the open reading frame. In DNA (deoxyribonucleic Acid), there are typically six reading frames. The correct frame is determined and the translation is started.
The ATG codon in the DNA sets the reading frame in most of the eukaryotes. Different frames can be started by beginning with either 'A', 'T', or 'G'.
Answer:
The change of fur color within the population over time became black as a result of the lava flow and allowed the mice to survive.
Explanation:
Because the mice that have brown fur would stand out and get picked of by predators so over time the mice with the darker fur could hide more easy and spread there genetics more easily.
