<span>Generally Labrador retrievers are black, brown, or yellow. in a cross of a black female with a brown male, results can be either all black puppies, 1/2 black to 1/2 brown puppies, or 3/4 black to 1/4 yellow puppies. So there must be 2 genes responsible for these coat colors in Labrador Retrievers.</span>
The answer is option B. The number of protons
If two atoms are isotopes of the same element then the number of protons in those two atoms must be same but the number of neutrons must not be same. If number of neutrons of an atom vary but number of protons in them are same then it simply means that they both are isotopes of a particular element. As we know that every atom has a nucleus which has protons and neutrons and due to these protons and neutrons an atom has weight. Apart from that, an atom has electrons too but they are outside the nucleus. Electrons are extremely light in weight so they do not contribute towards weight but they have a great role in chemical reactions. During chemical reactions, it is electron which directly participates, while proton and neutrons do not take part or move during chemical reactions. Also, in a neutral atom number of protons is equal to number of electrons but when an atom becomes negatively or positively charged, it can gain or loose electrons so electrons have tendency to vary. That is why we cannot consider electrons to be always same for isotopes of an element. It is clear that for an isotope, the number of electrons and neutrons will vary but the number of protons will always be fixed.
Answer:
The term transgenes refers to
genes that are transferred from the genome of one organism into another.
Explanation:
The reason why Jane cannot receive blood from
her sister Mary is the blood type incompatibilities. <span>Jane has type A blood, so she has B antibodies.
Due to this, she can only receive blood from someone who is type A or type O</span> and it happens that Mary’s blood type is AB.
They will be the same, because in mitosis the chromosomes are replicated exactly. In short, the chromosomes become short and thick, are then pulled apart, so you end up with two pairs of chromosomes, then cytokinesis splits the cytoplasm in to two separate ones, creating the daughter cells
