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3 years ago

What are the advantages of live birth compared to ovulation?

Biology

1 answer:

olya-2409 [2.1K]3 years ago

7 0

Answer

Just think critically about why (if you were an egg laying species), having a fetus/baby develop inside of you would be advantageous.

For one, eggs are much less protected from outside factors such as predators, temperature, etc than live birthed creatures. Live birth provides protection inside the mothers body from things such as heat, cold, moisture, predatory animals, etc. An egg laying animal must keep its eggs at a perfect temperature and check to make sure no other animal has eaten them.

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one gene in a population of snails determines whether they are poisonous. being poisonous (P) is dominant over not being poisono

Harlamova29_29 [7]

Answer:

F (pp) = 0.04

F (Pp) = 0.32

F (PP) = 0.64

Explanation:

Studying population genetics, we used the Hardy-Weinberg equilibrium model. In the case of snails, the H-W principle predicts that the total number of cases in the population should follow the following equation: PP + 2.Pp + pp = 200.

If a population has 200 snails and 8 are affected by a recessive condition, we have 4% affected, or 0.04.

This means that 0.04 corresponds to p², and p corresponds to 0.2.

Therefore, P is equal to 0.8 because p + P = 1.

Knowing the allele frequencies, we go to the frequency of the genotypes.

F (pp) = p² = 0.04 = 8 snails

F (Pp) = 2.Pp = 0.32 = 64 snails

F (PP) = P² = 0.64 = 128 snails

7 0

3 years ago

When a dog salivates after having food placed in its mouth the food is called the?

creativ13 [48]

This is a trick question there is no there name for it

7 0

3 years ago

2 C2H6 + 702 — 4 CO2 + 6H2O

Andreas93 [3]

We calculate the number of moles of water given its mass by dividing the mass by the molar mass.

n water = (36.04 g) / (18 g/mol)

n water = 2 mols

From the given balanced equation, every 6 moles of water produced will require 7 moles of oxygen.

n oxygen = (2 mols H2O) x (7 moles O2 / 6 moles H2O)

n oxygen = 2.33 mols O2

6 0

3 years ago

2. Name a microbe that lacks a cell wall and would find hypotonic environments detrimental.

Alina [70]

Answer:

I so I am also a bit confused, but I hope this could answer your question!

Explanation:

The bacteria possess a cell wall composed of peptidoglycan molecule formed by the amino acids called murine. The bacterial cell wall helps in the survival of the bacteria in some extreme condition like when placed in a hypotonic solution.

The hypotonic solution is formed when it has low solute concentration and high water amount when compared. When the bacterial cell will be placed in hypotonic solution then the water will move inside the cell down the concentration gradient as a result of which the bacterial cell will swell but will not burst.

This happens as the cell wall contains expansin protein which allows the cell wall to expand and provides rigidity to the cell.

7 0

3 years ago

Read 2 more answers

Which of the following are human activities that can

Brums [2.3K]

Answer:

Option C is the correct answer.

Explanation:

Agriculture however dont harm or give negative impact on the nature.
Earthquake is a natural disaster which is not caused by human.
Plastic pollution leads to imbalance in ecosystem as many people burn it which causes imbalance in carbon oxygen cycle. it also destroy the quality of soil.
Drought is just a condition where there is no rainfall.

Hope it helps...

8 0

2 years ago