Which sentence best describes vestigial structures? They contain genetic mutations. They may have had an important function in the past. They are necessary for an organism's survival. All animals have them.
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Answer: They may have had an important function in the past.
Explanation:
Vestigial structures are the ones which are present in an organism but do not serve any essential function in the organism.
It is believed that these structures must have served an important function in the past but have lost their functionality over the course of evolution.
An example of vestigial structures found in humans is the tailbone.
Vestigial structures are best described as: They may have had an important function in the past
Which best describes the sun's affect on the water cycle
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evaporation is what the sun mostly has part of inn the water cycle
Explain how you determined the genotype of Maria and Juanita, even though you did not test their DNA.
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The answer is a pedigree chart.
Pedigree charts are used to explain the occurrence of particular genes from one generation to the next. It gives enough information about family disease history. They are used in families to find out the probability of inheriting some disease. So, if Maria and Juanita are cousins and the genotypes of other members of their family are known, the pedigree chart could predict their genotypes. Still, it is not as precisely as DNA test.
In the female body, each egg is surrounded by a _____________ which breaks open when the egg is mature.a. ovary c. placenta b. follicle d. uterus
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The correct answer is the ovarian follicle. In the female body, each egg is surrounded by an ovarian follicle which breaks open when the egg is mature. The ovarian follicle is the one responsible in secreting hormone during the menstrual cycle.
What type of fish are nemo and Marlin
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Nemo and his dad Marlin are clownfish.
they are clown fish. most definately
The Sun unevenly heats the minerals in a rock, causing the rock to break. This is an example of _____. a) chemical weathering B) biological weathering C) physical weathering D) erosion
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The answer would be C physical weathering because heat and the breaking of the rock can be the result of physical weathering, and the other answers would not make sense. Biological weathering would be the breaking down of the object due to a form of life (incorrect answer), erosion is the carrying away of something (incorrect answer), and chemical weathering would be changing the identity of the substance(incorrect answer).