Fossils are found of giraffes with short necks.
Lamarck believed the giraffes stretched their necks and passed it to their offspring
necks grew longer due to stretching.
giraffes need long necks for food and evolution provided it to them
They are all tetrapoda.
Tetrapods are animals (group of vertebrates) with four limbs including amphibians (frogs), reptiles (caimans), birds (parrots) and mammals (hares, humans). Even though the subgroups within Tetrapods differ a lot, they all have various adaptations of the skeleton and muscles that enable them movement on land, adaptations of cranium (for head stability), tissues that reduce water loss (because of living outside the water)…Except amphibians all other tetrapoda are amniotes (have amnion layer around embryo)
<em><u>what is dormancy:
</u></em><em>it is the stage before seed germination in which no growth or development of seed takes place and they disperse.......
</em><em><u>advantage:
</u></em><em><u />this stage is necessary for the seed to get a suitable environment and conditions for germination...
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Answer:
D. Many amino acids are encoded by multiple codons. A gene mutation that encodes the same amino acid would have no observable effect on the cell or the organism
Explanation:
If gene mutation does not change code (gene still encodes for the same amino acid), the same protein with its function will be produced. This is called synonymous mutation.
Silent mutations might also occur when codon is altered to produce an amino acid with similar function as previous (e.g. leucine to isoleucine) so that the function of protein is not significantly changed.
Correct Answer: B. Catch B
Explanation: Fish depend on dissolved oxygen to survive. Ponds with high levels of dissolved oxygen will support more fish (and larger fish) than ponds with low levels of dissolved oxygen. Trout are particularly sensitive to dissolved oxygen levels, so a pond with a healthy trout population probably has high levels of dissolved oxygen.
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