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Effectus [21]
3 years ago
6

Final maturation process of sperm in female tract before fertilization accomplished by binding of sperm to a glycosaminoglycan

Biology
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0
Mammalian fertilization comprises sperm migration through the female reproductive tract, biochemical and morphological changes to sperm, and sperm-egg interaction in the oviduct. Recent gene knockout approaches in mice have revealed that many factors previously considered important for fertilization are largely dispensable, or if they are essential, they have an unexpected function. These results indicate that what has been observed in in vitro fertilization (IVF) differs significantly from what occurs during “physiological” fertilization. This Review focuses on the advantages of studying fertilization using gene-manipulated animals and highlights an emerging molecular mechanism of mammalian fertilization.
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xz_007 [3.2K]

Answer:

a

Explanation:

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3 years ago
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Marianna [84]

The answer is A or the first one

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In which group is parthenogenesis a normal event?
bezimeni [28]

Answer:

Bees

Explanation:

Parthenogenesis is a method of asexual reproduction in which an egg cell develops into a new individual without fertilization. Parthenogenesis occurs in insects, amphibians, reptiles, fish, and in some plants. Most of the organisms which reproduces through parthenogenesis, they also reproduce sexually. Parthenogenesis may be occurs by apomixis and by automixis. In apomixis, egg is produced by mitosis and results into diploid clones. In automixis egg is produced by meiosis and the haploid egg develops into diploid new individual by the duplication of chromosomes. Parthenogenesis is an adaptation which allows to reproduce in adverse environmental conditions when sexual reproduction is not possible.  

5 0
3 years ago
Raya conducts an experiment to study the effect of altitude on the growth of plants she gathered plant samples and places them o
aniked [119]

Answer:

Independent variable: ALTITUDE

dependent variable: GROWTH OF PLANTS

Confounding variable: STOREYS OF THE BUILDING

Explanation:

In an experiment, the basic components i.e primary variables that an experiment should contain, are the independent and dependent variables.

- The independent variable is the variable that is changed or manipulated in an experiment. In this experiment, the ALTITUDE of the plant is the independent variable.

- The dependent variable is the variable that responds to changes to the independent variable. It is the variable measured in an experiment. In this case, the dependent variable is the GROWTH OF THE PLANTS.

- The confounding variable is a variable that has an extra influence on the outcome of the experiment. In other words, the confounding variable has an impact on the dependent variable. In this case, the confounding variable is the STOREYS OF THE BUILDING.

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2 years ago
How much atp is produced from a single glucose molecule in each reaction set?
drek231 [11]
30 ATP is produced from a single glucose molecule
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2 years ago
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