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sasho [114]
3 years ago
15

During which phase of meiosis does crossing over of chromosomes occur?

Biology
1 answer:
Semenov [28]3 years ago
7 0

Answer: it happens in prophase 1 of meiosis

Explanation:

Prophase 1 is characterized by the lining of homologous chromosomes, these are called tetrad.

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Model: To determine the probability of a trait combination such as black fur and red eyes consider each trait separately. Fill i
Yuki888 [10]

Answer:

3/8

Explanation:

I think I can help with completing the question.

Above each punnet square, the genotypes of the parents were given right? something like this:

Parent 1 fur genotype: Ff                             Parent 1 eye genotype: Ee

Parent 2 fur genotype: Ff                            Parent 2 eye genotype: ee

       F         f                                                              E        e

F     FF       Ff                                                    e     Ee      ee

f      Ff        ff                                                     e     Ee      ee

Probability of black fur if dominant is:               Probability of red eyes:

    3/4                                                                       2/4= 1/2

Probability of a trait combination such as black fur and red eyes is

3/4*1/2 = 3/8.

6 0
4 years ago
Unlike life at the top of a body of water, life at the bottom of the body of water A. performs much more photosynthesis. B. rece
Paraphin [41]
<span>D. must rely on other means than photosynthesis. </span>Because sunlight is inadequate at the bottom of the sea, photosynthesis cannot take place. There are no plants and food is scarce; usually decaying matter from dead organisms. Organisms in the bottom of the sea relies on chemicals from hydrothermal vents to create their own food through chemosynthesis.
7 0
3 years ago
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Using your knowledge of formal, functional and perceptual regions, write one paragraph of at least ten sentences giving examples
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Answer:So to make it easier, geographers divide the Earth into regions. Regions are areas that share common features. These features can be landforms, climate, economy, vegetation, or people. The states or countries within these regions are also located in the same area.

Explanation:

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3 years ago
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Which statement regarding the functioning of the cell membrane of all
devlian [24]

Answer:

The Cell membrane is the main source of wnergy for the cell

Explanation:

Its the ATP. Cells make use of a molecule called adenosine triphosphate, or ATP, as a source of fuel.

4 0
3 years ago
On Christmas Eve of 1998, the Ohio State Health Department announced that two elderly people had died during the previous six we
cluponka [151]

Answer:See explanation

Explanation:

a. What is the most likely cause of the disease?

The most likely cause of the disease is Listeria monocytogenes.

b. Why is this infection associated with processed meats, but not usually with hamburger or cuts of meat including pork, beef, or chicken?

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