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slega [8]
3 years ago
11

An explanation or model of related natural events that can be tested by observation and experiments is called a

Biology
1 answer:
Natalija [7]3 years ago
6 0

Hypothesis, Law, and Theory

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Pedigrees are used to help geneticists understand how traits are inherited between generations. The Romanovs, a Russian royal fa
svet-max [94.6K]
The question is the following :
<span>What is the best evidence to prove that Irene was heterozygous for hemophilia?
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B) Alexandra carried the recessive allele.
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The correct answer is A

In the pedigree, marked with blue are the carriers of the X recessive allele ( they have one X that has the mutation and the other that doesn't).
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3 years ago
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3 years ago
How do the teeth of Old World monkeys and apes differ? a. Old World monkeys have a diastema, whereas apes do not. b. Old World m
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Answer:

The correct answer is D: "<em>Apes have a Y-5 pattern of cusps, whereas Old World monkeys have a bilophodont pattern</em>".

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Apes and old world monkeys only have four kinds of teeth: <em>two incisors, one canine, two premolars, and three molars</em>. This dental formula is 2.1.2.3.

The old world monkeys characterize for having molars with four cusps joined by ridges. They have bilophodont teeth with better crushing, shearing and wearing capabilities than apes.  

Apes´molars have 5 cusps, a Y-shaped space between those raised points, and no transverse lophs. These characteristics are known as the Y-5 pattern.

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3 years ago
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