A biology problem to help. Biology questions, help help. Urgent

Updated on technology 2024-04-24
10 answers
  1. Anonymous users2024-02-08

    Please note: "Peach trees are woody plants for many years", so the pollinated offspring (in the seeds) did not grow (the seeds were still). Every year, the peel is actually the same generation (the ovary wall is developed, not fertilized).

  2. Anonymous users2024-02-07

    The pulp eaten is the development of the ovary, the ovary gene depends only on the mother, and the result of pollination is to produce seeds, which produce auxin, which promotes the expansion of the ovary and thus does not affect the taste of the fruit

  3. Anonymous users2024-02-06

    The flesh part of the peaches we eat is developed from the ovary, and the genes of the ovary depend only on the mother itself, and the result of pollination is only to produce seeds, which produce auxin, which promotes the expansion of the ovary.

  4. Anonymous users2024-02-05

    People eat the pulp of the fruit, which is developed from the ovary, and pollination does not affect the taste of the pulp.

  5. Anonymous users2024-02-04

    The flesh of the fruit of the peach tree is the peel, which is the structure of the female parent and reflects the traits of the female parent.

  6. Anonymous users2024-02-03

    1. No, no, can.

    2 The first can illustrate the importance of plasma to the nucleus Without cytoplasm, the nucleus cannot live normally. Because proteins are the main bearers of life activities, although the nucleus can control the synthesis of proteins, it cannot synthesize proteins without the cytoplasmic environment and the cooperation of various organelles in the cytoplasm.

    3. The nucleus is the control center of cytogenetics and metabolism, and various proteins in the cytoplasm are controlled and synthesized by the nucleus.

  7. Anonymous users2024-02-02

    A, B: Not alive C: Can survive.

    1 and 3 illustrate the role of cytoplasm on the nucleus.

    The third is to flip through the textbook to see what conditions the cytoplasm provides for the nucleus, and what guarantees the nucleus provides for the cytoplasm

  8. Anonymous users2024-02-01

    a Genetic mutation.

    The mutation of the gene can explain that it has always been a red tomato, and now there is a yellow tomato (because there was no gene for the yellow tomato before. )

    If we talk about genetic recombination, then there must be a gene for the yellow tomato [and in this way, the yellow tomato must be a recessive gene (AA), and the red fruit is dominant (AA), then there is a heterozygous (AA) in the red tomato to form the yellow tomato (AA)], that is to say, this recessive gene originally existed, so that there is more than one yellow fruit tomato, there will be a lot. So it's not genetic recombination.

  9. Anonymous users2024-01-31

    A gene mutations are sudden, heritable mutations in genomic DNA molecules.

    Chromosomal aberrations: abnormal changes in the structure and number of chromosomes.

    Genetic recombination: refers to the recombination of genes that control different traits in the process of sexual reproduction in an organism.

    Because it was all red, and suddenly there was an extra yellow, so it couldn't be genetic recombination, it could only be A.

  10. Anonymous users2024-01-30

    C should be selected, gene mutation does not necessarily have an impact on the organism, and it is a mutation in a certain part, which will not affect the whole, all of them are red, and there is no yellow gene in the gene at all, so it is impossible to be gene recombination, chromosomal mutation will definitely affect the organism, and the range of influence is larger, it can be the whole organism, so choose C

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