Heredity and Genetics Answers
Describe a potential risk of a hurdle stretch performed with the leg pointed back rather than with the leg inside.
It can twist and overstress the knee joint, potentially injuring the knee ligaments or causing knee pain.
Explain what is meant by balance stretching.
Balance stretching means stretching both sides of the body and opposing muscle groups evenly, rather than stretching one side or muscle group much more than the other.
The standing toe touch is most likely to result in __________.
Explain why head circles and arm circles are considered dangerous exercises.
Head circles can strain or injure the neck by rotating it through an excessive range, and arm circles can overstress the shoulder joint and cause injury.
Which of the following is a ballistic stretching exercise?
Why should you allow a minimum of 24 hours of rest between intense stretching activities?
A minimum of 24 hours allows the muscles and connective tissues to recover and repair, reducing soreness and the risk of overuse injuries.
The FITT principle stands for __________.
A full stretching session should take between __________.
The chest-and-arm stretch squeezes __________.
Explain why it is important to stretch slowly and why bouncing during stretching is very dangerous.
Stretch slowly so the muscles and connective tissues can lengthen gradually. Bouncing places sudden, uncontrolled stress on them and can cause overstretching, strains, or tears.
Complex genetic diseases are different from single-gene diseases because they __________.
An old bone contains 80% of its original carbon-14. Use the half-life model to find the age of the bone. Find an equation equivalent to
Compare and contrast dominant and recessive genes.
As the name suggests, the traits controlled by dominant genes are more likely to appear in our children. Recessive genes will only have an effect when the corresponding dominant gene isn't present.
Which of the following elements does your thesis statement include? Check all of the boxes that apply.
How old is the bone?
Describe the chromosomes needed for an embryo to become a female and those needed for an embryo to become a male.
Female eggs only have the X (female) chromosomes, while the male sperm cells have both the X and Y (male) chromosomes. If the X from the male and X from the female unite, then the child will be female. If the Y from the male and X from the female unite, then the child will be male.
Explain the causes and symptoms of sickle cell anemia.
Sickle cell anemia is caused by the red blood cells' inability to properly form hemoglobin. The result is an inability to transfer oxygen and blood throughout the body.
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