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shusha [124]
3 years ago
5

I need a better science grade so im trying to at least get an 80 percent, no lower grade

Biology
1 answer:
sergejj [24]3 years ago
8 0
The answer will be D
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Unusual ________________, sights, ___________, appearances or __________________ are often the first sign of an emergency ______
kolezko [41]

Answer: Unusual sounds or noises, sights,smells or odors, appearances or behaviors are often

the first sign of an emergency.

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3 years ago
The United States laws that protect endangered Species strong
mr_godi [17]

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3 years ago
In the family tree below, people with the recessive trait of attached earlobes are shaded gray
serious [3.7K]
<h2><u>Full Question:</u></h2>

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

What must be true about the person labeled "A"?

A. It is a male with at least one dominant allele.

B. It is a male with two dominant alleles.

C. It is a female with at least one dominant allele.

D. It is a female with two dominant alleles.

<h2><u>Answer:</u></h2>

Its a male with atleast one dominant allele.

Option A.

<h3><u>Explanation:</u></h3>

The gene for the attached earlobe is recessive while the gene for the free earlobes is dominant. In the phylogenetic tree, we can see that both the father and mother aren't having attached earlobes. So both of them are having atleast one dominant allele which makes them have free earlobe.

In the F1 offsprings, one of the female and a male is having free earlobes. So both of them have atleast one dominant allele. The 2nd female is having an attached earlobe. So both the recessive allele have come form one parent each. So both of them are heterozygous.

Thus, the male marked as A atleast have one dominant allele. He can be a homozygous dominant, but the probability is 25%.

8 0
3 years ago
Describe one of the three types of volcanoes we discussed today.
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The types of volcanoes that I am aware of are dormant, active, and extinct. Active volcanoes are volcanoes that have erupted in the past 10,000 years. Dormant volcanoes are active volcanoes that are supposed to erupt in the future. Extinct volcanoes are volcanoes that have not had an eruption in the last 10,000 years and is not expected to erupt.

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2 years ago
What’s the chemical make up of a rock
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IT SEEMS THAT YOUR QUESTION IS INCOMPLETE...... PLZ ELABORATE YOUR QUESTION
4 0
3 years ago
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