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2 years ago

Describe the stages used to produce a cloned mammal

1 answer:

7 0

The egg cell must first be enucleated through the process of removing the nucleus from the surrogate mother’s egg. An adult cell nucleus from the desired mother is then inserted into the enucleated egg. This combination of adult cell nucleus inside the enucleated egg must now be stimulated with an electric shock. This will cause the start of cell division by mitosis to eventually form an embryo in the uterus of the surrogate mother whom the initial enucleated egg belonged to.

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Can someone answer this please :)

IrinaK [193]

The answer will be for you U

7 0

3 years ago

A group behavior that is more common in bony fish than a cartilaginous fish is

Crank

Answer:

Schooling

Explanation:

Schooling is a collective activity that is far more prevalent in bony fish than cartilaginous fish.

Schooling is a term used to describe collective activity in fish. For example, if a group of fish swims in the same direction in a coordinated fashion, they are schooling.

Fish schools are one example of animal aggregation.

4 0

1 year ago

A rooster with gray feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black,

m_a_m_a [10]

Answer:

Alleles for feather colour exhibit incomplete dominance or co-dominance.

50% gray offspring + 50% black offspring

Explanation:

<em>It means that the alleles for feather colour in the hen exhibit incomplete dominance or co-dominance over one another.</em>

Assuming the allele for white colour is B, white colour will be b while the heterozygote Bb gives the gray phenotype.

Gray rooster + gray hen = 15 gray chicks, 6 black chicks and 8 white chicks.

15:6:8 is roughly 2:1:1 which is phenotypic ratio obtainable from crossing two heterozygous individuals as pointed out by Mendel.

Bb x Bb = 1BB, 2Bb, and 1bb

Crossing the gray rooster (Bb) with a black hen (bb):

Bb x bb = Bb, Bb, bb, and bb

= 2Bb (gray):2bb (black)

50% of the offspring will be gray while the remaining 50% will be black.

7 0

3 years ago

What happens when a hypothesis is not supported

Temka [501]

<span> For a start, when you have a question that needs answering in science, you formulate a null hypothesis. That is a negative statement which you then set out to prove or disprove. This is just a convention. So if your initial question is for example, "Does sugar dissolve in water?"

Your null hypothesis will be "Sugar does not dissolve in water."
You then set up your experiment and get some data.

Now if your data doesn't support your null hypothesis then you reject it and make the statement ,"Sugar does dissolve in water." As you can see from this simple example, a non-result is still a result so the idea of formulating new tests as mentioned by another answerer isn't necessary and in some ways is the incorrect thing to do. In science, hypotheses are often not supported by data and i would argue that this is the case a lot of the time. A non-result is still a result and you will have plenty to write about whichever way it goes. </span>

5 0

3 years ago

Joint and bone pain, fever, weight loss, fatigue, weakness, hepatomegaly, splenomegaly and enlarged lymph glands are typical sym

kvasek [131]

Answer:

True.

Explanation:

White blood cells cannot function properly and their reduced production can lead to fever and frequent infections. This is because the function of white blood cells in fighting germs has been disrupted.

Other signs and symptoms:

- Weak and tired.

- Lack of appetite and weight loss.

- Swelling and bleeding gums.

- Headache.

- Abdominal swelling is caused by enlargement of the liver and lymph.

- Bone pain, can cause weakness.

Joint pain.

- The glands are swollen. If the glands in the neck and chest are swollen, it can cause blood flow to be blocked. This causes the face to swell, difficulty breathing and snoring.

#If i'm wrong, i'm sorry

4 0

3 years ago