Which event occurs during interphase?

Meiosis ensures the passage of the diploid phase to the haploid phase. It follows a phase of DNA replication and consists of two successive divisions, the second is not preceded by a duplication of DNA. These two divisions lead, from a diploid mother cell (2n chromosomes), to four haploid daughter cells, the gametes (n chromosomes).

Meiosis and fertilization are at the origin of genetic mixing.

During meiosis, intra- and interchromosomal mixing occurs (inducing a genetic diversity between the daughter cells, and they are systematically different from their mother cell).

*Intrachromosomal mixing, or crossing-over recombination, takes place between paired homologous chromosomes during the prophase of the first meiosis division;

*Interchromosomal mixing is due to the independent migration of the homologous chromosomes of each pair during anaphase of the first division. It therefore concerns chromosomes reworked by the intrachromosomal mixing that preceded it.

7 0

3 years ago

An individual with type A blood and an individual with type B blood mate and have offspring. What blood type is not possible in

MArishka [77]

Answer:

E (All blood types are possible)

Explanation:

The ABO blood group system in humans is a vivid example of co-dominance, where blood type A and B are codominant but are both dominant over blood type O.

Based on this genetic scenario, A codominant blood type AB can be produced, Blood type A can possess AA and AO, Blood type B can possess BB and BO, while Blood type O can only possess OO.

Hence, in a cross between a type A individual- AO or AA and a type B individual- BO and BB, gametes will be produced according to Mendel's law of segregation.

AO, AA (Type A) = A and O gametes.

BO, BB (Type B)= B and O gametes.

Hence, from the combination of these gametes, their offsprings can possess AB, AO, BO, OO which covers all the blood types.

Therefore, all blood types are possible

7 0

4 years ago

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