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jenyasd209 [6]
3 years ago
14

At fertilization, what happens to the sex cells?

Biology
1 answer:
Thepotemich [5.8K]3 years ago
7 0

Answer:

Their chromosomes join to form one nucleus.

Explanation:

At fertilization, when sperm of male enters into the ova or egg of female, their chromosomes join to form one nucleus.

During the process of fertilization, several reaction occurred to form a zygote. Once the sperm reaches the egg, it releases some enzymes to degrade the zona pellucida (layer around the egg) and enters the egg for fusion to give one zygote or nucleus.

Hence, the correct answer is "Their chromosomes join to form one nucleus."

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Pea plants heterozygous for flower position and stem length (AaTt) are allowed to self-pollinate, and 400 of the resulting seeds
7nadin3 [17]

Answer:

            AT             At           aT             at

AT      AATT        AATt       AaTT        AaTt

At        AATt         AAtt        AaTt        Aatt

aT        AaTT        AaTt        aaTT       AaTt

at          AaTt         AaTt        aaTt        aatt

The results of the punnet square show that one out of 16 offsprings will have both the qualities of having terminal flowers and being a dwarf.

A punnet square can be described as a diagram which depicts the likely outcomes of a cross. In the above punnett square, for the plants to have both terminal flowers and to be dwarf, both the alleles should be recessive for the traits.

7 0
3 years ago
How do diseases that affect one species, impact the entire ecosystem?
Inessa [10]
How does disease affect the ecosystem? I don’t know... Just kidding Explanation:
Most ecosystems include viruses, bacteria, fungi, and parasites that cause disease. ... Where ecosystems are not healthy, due to a loss in biodiversity and threats such as habitat loss, climate change, pollution, or invasive species, wildlife and ecosystems are more vulnerable to emerging diseases.
5 0
3 years ago
which best explains the high surface tension of water? its high density its ion-dipole interactions its adhesive interactions it
Citrus2011 [14]
The high surface tension of water, so as many other of its properties, is due to the strong attraction force created by the hydrogen bonding, which is the attraction between neighbors hydrogen atoms (with a partial positive charge) and oxygen atoms (with partial negative charge)

Answer is its hydrogen bonding.

5 0
3 years ago
Read 2 more answers
These are nucleotides that have a single ring structure. Example: Cytosine, Thymine, and Uracil
IgorLugansk [536]

Answer:

The question is incomplete.

However, I notice that your question is mainly dealing with

"Nucleotides with a single ring structure"

I tackled that part, also providing explanation to the point you focused on.

Explanation:

Nucleotides are compounds in which nitrogenous bases (purines and pyrimidines) are conjugated to the pentose sugars (ribose or deoxyribose) and at least one phosphate group. Thus a nucleotide consists of a nitrogenous base, pentose sugar and at least one phosphate group.

Examples of the nitrogenous bases are Adenine, Guanine, Thymine, Uracil and Cytosine. Of all, Thymine, Uracil and Cytosine are with single ring, while Adenine and Guanine are double ring structure.

8 0
3 years ago
Read 2 more answers
Name <br> 5 functions of saliva
Volgvan
1. It helps break down starch
2. It helps with chewing/swallowing
3. It helps you speak more smoothly because it moisturizes the inside of your mouth.
4. Dissolves food
5. It helps fight against pathogens
6. washes away debris and bacteria in mouth  
7. Supplies certain minerals to teeth.<span />
3 0
3 years ago
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