BIOLOGY HIGH SCHOOL

In genetic complementation testing, crosses are performed between pure-breeding strains for recessive mutations that confer the same mutant phenotype. If the two mutations are in the same gene, then what phenotypic ratios would be expected among the progeny? A. All of the F1 progeny would display the mutant phenotype associated with the parents.
B. There will be a 1:1 ratio of mutant to wild-type.
C. All of the F1 progeny would be wild-type.
D. All of the F1 progeny would display a novel mutant phenotype that differs from that of the parents.
The answer is not C.

Answers

Answer 1
Answer:

Answer:

All of the F1 progeny would be wild-type.

If the two mutations are in different genes, then we expect complementation to occur (each mutant strain provides a functional copy of the gene that is defective in the other strain) and wild-type progeny to be produced
Answer 2
Answer:

Final answer:

In genetic complementation testing, a 1:1 ratio of mutant to wild-type phenotypes is expected in the progeny when the two mutations are in the same gene.

Explanation:

In genetic complementation testing, crosses are performed between pure-breeding strains for recessive mutations that confer the same mutant phenotype. If the two mutations are in the same gene, then the expected phenotypic ratio among the progeny is a 1:1 ratio of mutant to wild-type, which means equal numbers of individuals displaying the mutant phenotype and individuals displaying the wild-type phenotype.

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This statement is true - a geologist does use a creep meter to measure the horizontal movement along a fault. Through using this instrument, geologists are able to work out the extent to which a fault is experiencing surface displacement.

The answer Is: True because a creep meter is one of the only answers it can be -I took the test

Gene therapy, which includes the correction of defective genes, is a significant part of the human genome project. Which of these is an application of the technique?A: A new protein, which can repair defective genes, is injected.
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Answers

The correct answer for the question that is being presented above is this one: "D: A new gene, which codes for the protein that can repair defective genes, is introduced." Gene therapy, which includes the correction of defective genes, is a significant part of the human genome project. Among the following choices, A new gene, which codes for the protein that can repair defective genes, is introduced is an application of the technique.

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after you cut out the drawongs of the rock layers how will u begin the process of sorting the layers by age

Answers

you carbon date them m8

Final answer:

To sort the rock layers by age, you can use the principles of relative dating and correlation, such as the law of superposition and the principle of original horizontality.

Explanation:

After cutting out the drawings of the rock layers, you can begin the process of sorting the layers by age by using the principles of relative dating and correlation. The first principle is the law of superposition, which states that the oldest rock layer is at the bottom and the youngest is at the top. The second principle is the principle of original horizontality, which states that layers of sediment are originally deposited horizontally. By examining the characteristics and relationships between the rock layers, you can determine their relative ages.

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Which best describes a compound such as magnesium oxide?

Answers

Magnesium oxide is a pure substance composed of two different atoms (magnesium atoms and oxygen atoms) chemically bonded to one another. 

Answer:

a pure substance that is made up of different elements

Explanation:

A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo. What piece of evidence would best indicate that the fossil is human?large jaw bone for muscle attachment

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Answers

The answer is large jaw bone for muscle attachment.

Pelvic blades are rotated inward anyway, so it is not the right answer. Very long arms are characteristic of many other animals, as well as a thick rib cage is. This leaves a large jaw bone for muscle attachment as the right answer. This trait is an adaptation to eating large quantities of food.

The correct answer is:

large jaw bone for muscle attachment.

Pelvic blades are rotated inward anyway, so it is not the right answer. Very long arms are characteristic of many other animals, as well as a thick rib cage is. This leaves a large jaw bone for muscle attachment as the right answer. This trait is an adaptation to eating large quantities of food.

Explanation:

By analyzing the fossil record we can tell how long life has remained on Earth, and how different plants and animals are compared to each other. The mandible, lower jaw or jawbone is the biggest, greatest and lowest bone in the human face. It affects the lower jaw and holds the lower teeth in place. The mandible sits below the maxilla. It is the only movable bone of the skull.

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