Answer:
1. Eukaryotic genomes contain large fractions of non-protein coding DNA sequence.
2. Eukaryotic genomes contain "satellite" DNA composed of various types of repetitive elements.
Explanation:
The genome of the eukaryotes and prokaryotes are very different. The eukaryotic genome is much larger as compared to the prokaryotic genome.
The eukaryotic genome is largely due to the presence of some sequence which does not code for any protein called introns and a large amount of sequence which continuously repeats itself in the genome called satellite DNA.
The eukaryotic genome when condenses, it forms an X-shaped called chromosomes whereas the prokaryotic genome is circular and thus is called circular chromosomes.
Thus, the selected option is correct.
Answer:
receive, transmit, myelin sheath
Explanation:
There are two main parts of a nervous tissue a) a neuron and b) glial cell. A neuron is made up of three parts a) a dendrite b) a cell body and c) an axon. A dendrite is responsible for receiving information from other cells of the body and send it to the cell body. An axon is responsible for transmitting information away from the cell body. Axons are coated with myelin sheath that has scwann cells to support it and provide nutrition.
Milk production and consumption now cause much more pollution.
Explanation:
Globally, milk production and consumption requires extensive dairy farming. This leads to emission of methane which is a greenhouse gas and contributes to global warming and climate change; air and water pollution.
The decomposition of wastes from dairy farm animals leads to the release of gases like methane and ammonia into the air leading to air pollution. Ammonia mixed in air along with dust spreading out from dairy farms causes to a lot of respiratory illness.
Methane (a greenhouse gas) emission increases carbon footprint leading to climate change and global warming. The runoff water from dairy farms is a huge cause of water pollution when they are released into lakes, ponds or rivers. This increases the nitrate levels of groundwater which affects the health.
Options for the question are not given. They are as follows:
a. arg or lys
b. ala
c. thr
d. leu or ser
e. Only termination codons
Answer:
d. leu or ser
Explanation:
Four codons code for proline amino acid. These are CCT, CCC, CCA, and CCG. Hydroxylamine causes C to change into T or G to change into A.
If first position is changed in each codon:
CCT = TCT (UCU)
CCC = TCC (UCC)
CCA = TCA (UCA)
CCG = TCG (UCG)
These codons produce Serine amino acid.
If second position is changed in each codon:
CCT = CTT (CUU)
CCC = CTC (CUC)
CCA = CTA (CUA)
CCG = CTG (CUG)
These codons produce Leucine amino acid.
Hence, out of the given options, option d. leu or ser is correct.
1. Response is called when frogs go into a hibernation-like state during the start of winter.
2. Hereditary is a term wherein the offspring inherits the characteristics of its parents.
3. The salamanders would have no place to mate and lay their eggs. They need to transfer location because their environment is demolished.