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Kryger [21]
3 years ago
15

True or False:

Biology
1 answer:
zalisa [80]3 years ago
5 0
1) true
2) false
3) true
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What is speciation?
Ede4ka [16]
D the formation of specicies
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3 years ago
______________ is a contractile tissue that can accurately change the lumen size of an arteriole so that the conductance of flow
umka21 [38]

Answer: Vascular smooth muscle cells.

Explanation:

Vascular smooth muscle cells are the contractile tissues which regulates flow blood and pressure of the blood by vasoconstriction (contraction) and/or vasodilatation (relaxation).

Vasoconstriction is the contraction of the blood vessels to increase tge pressure of the blood.

Vasodilatation is the relaxation of the blood vessels which results in a decrease in blood pressure.

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Which is made up of lipids<br><br> a) steroids<br><br> b) peptides<br><br> c) prostaglandins
Mamont248 [21]
B because the peptides when they collect in a clump, has a effect like hydrocloric acid.
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3 years ago
A person has polydactyly (extra fingers or toes). Polydactyly is caused by a dominant allele.
Helen [10]

Answer:

1 I think, read the explanation.

Explanation:

Offspring need to carry just one dominant allele from their parents to inherit the polydactyl condition. The probability of the offspring having polydactyly is 50% (2 of the 4) and 50% not having it (normal). This can be expressed as a ratio, 2:2 which can be simplified to 1:1. - found on the internet

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3 years ago
Explain the process of speciation.
Sergio [31]

4: a species is a group of interbreeding natural populations that are reproductively isolated from other such groups. Process of Speciation. The process of speciation is a 2 stage process in which reproductive isolating mechanisms arise between groups of populations.

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