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lianna [129]
3 years ago
15

What structure provides a protective environment in which the fetus's temperature is well regulated and protects the fetus from

friction caused by the mother's movements?
Biology
1 answer:
Gnom [1K]3 years ago
5 0

Answer;

The amnion

Explanation;

-The amnion is a tough, thin membrane that surrounds a developing fetus in mammals, reptiles, and birds. It is the first of the three cavities (amnion, chorion and yolk sac) in the embryo and is formed on 8 dpc.

-In the human body, the amnion is the first of three cavities, including the chorion and yolk sac, that work together to keep the developing fetus nourished and protected.

-The amnion provides a protective environment in which the fetus' temperature is regulated and protects the fetus from friction caused by the mother's movements.

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If you have a pet cockroach with a brown body, how could you find out if it is
aleksklad [387]

Answer:

by testcrossing with a homozygous recessive partner

Explanation:

<u>If a pet cockroach exists whose zygosity is unknown, this can be determined by a test cross. A test cross involves crossing an organisms whose zygosity is unknown with a partner that is homozygous recessive for the same trait.</u>

Let us assume that brown body is represented by the allele B, the dominant allele. The homozygous recessive version would be bb.

The genotype of a brown cockroach whose zygosity is not known can be denoted as B_, where '_' can be a 'B' or a 'b'.

When B_ is crossed with bb:

B_   x   bb

Progeny

2 Bb

2 _b

The phenotype of Bb would be brown (since B is dominant over b) while the phenotype of _b would depend on the zygosity level of the cockroach.

If the unknown genotype is BB, then _b becomes Bb and the phenotype will be a brown body. This means that all the progeny will appear brown. (<em>see the first attached image for the Punnet's square</em>)

In other word, if the unknown genotype is bb, then _b becomes bb and the phenotype will be a alternate color (non-brown) body. This means that 50% of the progeny will appear brown while the remaining 50% will be in the alternate color. (<em>attached</em>

3 0
3 years ago
Humans can over use the land which can speeds_____________ and could possibly lead to the land not being able to be used as farm
Aloiza [94]

Answer:

mathematics

life sciences

8 0
2 years ago
CAN SOMEONE HELP??? PLEASE
34kurt

Answer:

C COMMON ANCESTOR

Explanation:

7 0
3 years ago
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Independent assortment of chromosomes during meiosis is a result of
Rudik [331]

Answer:

The independent assortment of chromosomes is a result of the independent division of chromosomes into separate gametes. Then, crossing over takes place where genes on each chromosome are rearranged. The Law of Independent Assortment discusses the random genetic inheritance from both parents.

Explanation:

study well

4 0
3 years ago
Which describes a relationship when calculating the energy of a photon?
shepuryov [24]
<span>The energy of the photon is directly proportional to frequency. 

'cause when frequency increases, it's energy also increases

So, option A is your final answer!

Hope this helps!</span>
3 0
3 years ago
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