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yulyashka [42]
3 years ago
13

What is the principal male sex hormone

Biology
1 answer:
Paladinen [302]3 years ago
4 0
Testosterone is the principal male sex hormone.
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Hey Guys! ^^ Here's A Question, Why does a dog circle around its bed before lying down?
Amiraneli [1.4K]

Answer:

it needs somewhere comforatible

Explanation:

When they circle around they need to get that space soft and then they will lay down

3 0
3 years ago
Why might a phylogeny based only on molecular data show a different pattern of relationships than a phylogeny of the same taxa b
Kitty [74]

A phylogeny of the same taxa based only on morphological traits:

Some highly conserved genetic sequences can result in unrelated species appearing closely related in a molecular phylogeny, and not reflect the same pattern as the morphologic phylogeny.

Gene sequence changes may not result in morphological changes.

Gene sequences always provide more data than morphological traits.

Morphological analyses always provide more data because each morphological trait is the result of the expression of many genes.

The molecular data may be based on the analysis of introns, which aren't expressed and don't contribute to the evolutionary history of a group of taxa.

Why is molecular data more accurate?

Phylogenetic trees reconstructed from molecular sequences are often considered more reliable than those reconstructed from morphological characters, in part because convergent evolution, which confounds phylogenetic reconstruction, is believed to be rarer for molecular sequences than for morphologies

Learn more about molecular data :

brainly.com/question/16044878

#SPJ4

6 0
2 years ago
Which of the following are matched correctly?
kogti [31]

Answer:

<u>1. type IV hypersensitivity: delayed-type hypersensitivity.  </u>

<u>2. type I hypersensitivity: IgE  </u>

<u>3. type II hypersensitivity: IgG  </u>

<u>4. type III hypersensitivity: immune complexes </u>

Explanation:

Type IV hypersensitivity is cell mediated hypersensitivity rather than antibodies as in all other types of hypersensitivities. It is also known as delayed type hypersensitivity because it usually respond in 2-3 days via T-Lymphocytes rather than antibodies like IgE or IgG. So we can say that in option 5 is mismatched as it relates type IV to IgG antibodies.

4 0
3 years ago
The cuticle, cortex, and medulla are regions of the hair, can you describe how they are arranged?
Andrei [34K]

Answer:

The cuticle is the hair's protective layer, the cortex forms the pigment of the hair, the health of the cortex depends on the cuticle protecting it while the medulla is the innermost of the hair.

Explanation:

The cuticle is the hair outermost layer, the cortex is the middle structure for strength while medulla is the inner most.

3 0
3 years ago
3
trasher [3.6K]

Answer:

D

Explanation:

3 0
3 years ago
Read 2 more answers
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