The type of nuclear division that leads to the formation of haploid gametes in both males and females is called meiosis.
In meiosis the gametes will only have half of the origin cells genes. That's why it called haploid. It different with mitosis where the result is diploid(paired chromosome).
Answer:
Based on knowledge of enzymes and the given data, it can be concluded that Tcn-protease is most likely active in the alligator's stomach and Wx-protease is most likely active in the alligator's intestines. As clear from the graph, the enzymic activity for Tcn-protease is highest at an acidic pH, which means it works best in an acidic environment, such as the very acidic stomach of an alligator. It is additionally clear from the graph that the enzymic activity for Wx-protease is highest at a neutral pH; therfore, it is most likely to be found in a neutral environment, such as the alligator's intestines.
Explanation:
- A pH less than seven is acidic
- A pH of at or around seven is neutral
- A pH of more than seven is alkaline (basic)
Answer: The common ancestor of humans and chimpanzees had 24 pairs of chromosomes, and at some point in the human lineage, two chromosomes fused end to end, providing some selective advantage.
Explanation: Humans evolved in a different way due to external factors and at some point in the human lineage, two chromosomes blended giving humans a selective lead.
Answer : The correct option is, (1) an atom with 20 protons, 21 neutrons, and 20 electrons.
Explanation :
Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.
Atomic number is defined as the number of protons or number of electrons.
Atomic number of = number of protons = number of electrons
Mass number is defined as the sum of number of protons and number of neutrons.
Number of neutrons = Mass number - Number of protons
As we are given,
Element = Calcium
Number of protons = 20
Number of electrons = 20
Number of neutrons = 20
For the isotope of calcium, the element should have the same number of protons but the different number of neutrons of each of the atom.
From this we conclude that, the option (1) would be an isotope of calcium because in this the protons and electrons are same but neutrons are different.
Hence, the correct option is, (1) an atom with 20 protons, 21 neutrons, and 20 electrons.
Answer:
Phylogeny.
Explanation:
Classification may be defined as the process of classifying the organisms into same or different groups depending on their similarities and differences. Carolus Linnaeus is known as the father of taxonomy.
Carolus believes in the fixity of species but the statement proves wrong as the species evolve with time. Linnaeus had been uncomfortable with the phylogeny or the evolution of the organism. His idea of the fixity of species is in contradiction with the phylogeny.
Thus, the correct answer is option (4).