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2 years ago

How dord the fetus get nourishment up until the time it is born?

1 answer:

3 0

The answer is through the placenta. The placenta is formed in the uterus of the pregnant woman. Its role is in the nourishment of the fetus. The placenta provides the fetus with nutrients and removes waste. The umbilical cord connects the placenta to the fetus and it serves as the transporting passageway.

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The year graphs shown below represent hours of daylight and solar energy for what location?

Ne4ueva [31]

b. Arctic Circle (66.5° N)

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3 years ago

What do all wetlands have in common?

elena55 [62]

Wetlands Types and Classifications. Wetlands have different characteristics. The most common feature of all wetlands is that the water table (the groundwater level) is very near to the soil surface or shallow water covers the surface for at least part of the year.

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2 years ago

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A fruit fly population has a gene with two alleles, A1 and A2. Tests show that 70% of the gametes produced in the population con

IceJOKER [234]

Answer:

Option C

Explanation:

Given ,

A1 allele is carried by $70$ % people

Let us assume A1 s dominant genotype

This means $p= \frac{70}{100} = 0.7$

Thus, frequency of allele in the given population is $0.7$

It is also given that the population is in Hardy-Weinberg equilibrium thus

$p+q=1\\0.7+q=1\\q = 1-0.7\\q= 0.3$

Frequency of fruit fly with genotype A2A2 will be

$q^2\\= (0.3)^2\\= 0.09$

As per Hardy-Weinberg's second equation of equilibrium

$p^{2} + q^{2} + 2pq = 1\\0.49+0.09+2pq = 1\\2pq = 1-0.49-0.09\\2pq= 0.42$

Hence, option C is correct

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2 years ago

What is one of the most commonly used groups of preservatives in the cosmetic, pharmaceutical, and food industries?

DiKsa [7]

It would be an antioxidant, and the most commonly used antioxidant would be absorbic acid.

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2 years ago

What is the definition of dorsal

Semmy [17]

Dorsal means back as in the back area. Example~ Many dolphins have a pronounced beak and all have a central dorsal fin and sharp teeth for feeding, mainly on squid and fish.

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2 years ago

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