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elixir [45]
3 years ago
7

What are the three pairs of salivary glands?

Biology
1 answer:
Arlecino [84]3 years ago
4 0
Parotid gland
submandibular gland
sublingual gland
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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
Before chromosomes can form, DNA must<br><br> unwind<br> stretch out <br> turn off <br> coil
pshichka [43]

Answer:

I believe the correct answer would be A. Unwind.

Explanation:

DNA must unwind so that it can be copied. After being copied by mRNA, it is then transported to the cytoplasm where the ribosomes translate it to RNA

Hope this helps,

♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u>♥

7 0
3 years ago
Review the results of the following experiment, which hypothesis most likely explains the results at 60°C and 70°C?
BabaBlast [244]

Answer:

The enzyme has changed shape because of the high temperature I just did this

Explanation:

.

7 0
2 years ago
Read 2 more answers
Do you think that in the human species, there are psychological traits such as empathy, aggression, intellect, imagination, etc.
WARRIOR [948]

Answer:

each sex has these traits, but with some, like aggression, I feel can be more "biased", so to speak, to the male sex

Explanation:

5 0
3 years ago
You are doing an experiment outside on a sunny day. you find the temperature of some sand is 28°
Alex
Water doesn't absorb heat as quickly as sand
3 0
3 years ago
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