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Feliz [49]
3 years ago
7

Organisms with gametes of the same shape but different sizes

Biology
1 answer:
kykrilka [37]3 years ago
5 0

Gametes that are the same in size and shape. Having gametes of different size and shape. Usually oogamous organisms have eggs and sperm. The female gonad in animals.

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Meiosis Foldable Activity 515.2
Aleksandr-060686 [28]

Explanation:

During the process of prophase I, the nuclear envelope containing chromosomes has only partly broken down homologous chromosomes are joined together by proteins and a complex or pairing call synapsis- corresponding genes on sister chromatids are aligned precisely.

The syanapsis allows for crossing over which is the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. In meiosis, the number of chromosomes (2n) is halved to 23 chromosomes (haploid number)through meiotic divisions, producing 4 haploid (n) germ cells or gametes (sperm or eggs), each containing half the number of chromosomes as its parent cell.

In Meiosis I

  • homologs pair off into bivalents
  • At crossing over: the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined in prophase I  forming bivalents; tetrads are formed.
  • Spindle fibers from centrioles join sister chromatids together at their centromeres in metaphase I, pulling them to the equator of the cell;
  • then, in anaphase I, while joined, they are pulled to opposite sides of the cell; the cell body splits and the nuclear envelope reforms in telophase I

In Meiosis II...

  • Later, in prophase II, the nuclear envelope disintegrates and mitotic spindle fibers are formed
  • independent assortment occurs. in metaphase II of meiosis: spindle fibers attach to centromeres, chromatids align independently at the equator. Genes segregate independently into new combinations as sister chromatids are pulled apart by their centromeres in anaphase II
  • in telophase II the cells' nuclei and membrane are then formed with each containing the haploid number (n)
  • Following the formation of gametes in the last stage, randomized fertilization occurs in sexual reproduction sperm cells fertilize an ovum to form a zygote. This occurs randomly by chance, to result in a complete set of chromosomes 2n, that is a novel combination of half each parent's number of chromosomes

Learn more about mitosis at brainly.com/question/4303192

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

4 0
3 years ago
(multiple choice) biology, thanks!
tensa zangetsu [6.8K]

Answer:

Stablising

Explanation:

Bcoz they acquiring mean character

4 0
3 years ago
Read 2 more answers
Barbara is a research scientist at an organic pest control company. Part of her job is to find foods that ants will eat so the f
zalisa [80]

Answer:

Barbara investigating that which food the ants like the most in order to use this food for killing the ants and removes them from a specific area.

Explanation: Ants are insects which sometimes act as pest because it lives in holes in the house and act as a carrier of many harmful diseases so in order to control the spreading of the disease we have to control the population of ants.

7 0
3 years ago
Where does anaerobic respiration occur in the cell?
nirvana33 [79]

Answer:

cytoplasm

Explanation:

8 0
2 years ago
What is fertilization? What does it result in?
Ainat [17]

Explanation:

the action or process of fertilizing an egg involving male and female gamete to form zygote is fertilization. fertilization result in zygote.

hope it helps.

5 0
3 years ago
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