The alternation of generations
in the life cycle of a plant includes the diploid and haploid multicellular
stages. diploid and haploid are copies of the chromosomes. The spores in the
plant is unicellular and when they start dividing through mitosis, it produces
identical cells. These identical cells are all haploid. Haploid stages contain
one set of chromosome from either of the parent. These identical cells create a
multicellular system called the gametophytes. A gametophyte is the haploid
multicellular stage in the life cycle of a plant. The gametophyte makes the
gametes. These gametes are responsible for sexual fertilization. It takes place
when a sperm (male gametes) from the male fuses into the egg cell (female
gametes) of the female. The formation of both
male and female gametes creates a diploid zygote. Diploid stages
contain one set of chromosome from each parent. This is where the sporophyte
comes in. A sporophyte is the diploid multicellular stage in the life cycle of
the plant. It now contains the two sets of chromosomes from each parent.
The type of
cell division that produces gametes with half the normal chromosome number is
the meiosis. Meiosis is the type of cell division used in sexual reproduction.
It will occur in the testes and ovaries.
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Answer:
desert a thinkkkkkkkkkkkkkk
Explanation:
the brain is an important part of the body it controls messages sent through your body and also it is the center for decision making emotions personality and thoughts
Answer:
food and physical activity choices, some medications, and skipping or not taking enough glucose-lowering medication
Answer:
Part A- Linear duplicated chromosomes
Part B-Anaphase
Explanation:
Sister chromatids are duplicated copies of a single chromosome that are attached to each other and are identical. They are attached at the centromere. The sister chromatids which are linear separate at the centromere and migrate to the opposite poles.
During anaphase, the sister chromatids of each chromosome separate at the centromere with each moving towards the opposite pole. The chromatids are pulled by the shortening of the spindle fibres. Mitochondria congregate around the spindle during this movement.
