Answer:
extinction is the normal extinction rate while mass extinction is wild spread event that wipes out majority of plants and animals
"1. Body composition is defined as D. ratio of muscle to fat.
2. Slow-twitch fibers are designed for D. endurance.
3. A by-product of ATP breakdown is D. ADP and phosphorous
4. A tendon is important for muscles. C. It serves as an attachment point to bone
5. Most joints in the body form B. FIRST-CLASS levers.
6. The correct statement concerning good posture is D. Good posture may help to improve balance.
7. The C. Buttocks is considered part of the pelvic girdle?
8. Fitness professionals know that good posture B. is a habit that can be learned and maintained.
9. One of the positive health-related benefits of muscular fitness is D. increased endurance during exercise.
10. The sagittal plane divides the body D. into left and right halves.
11. A normal spine appear on an x-ray B. With natural curves in the neck and lower back
12. Based on the factors of stability, A. Leg curl would be the most unstable lift
13. When you flex your arm, you're performing a/an C. CONCENTRIC contraction.
14. The three body systems that benefit from good posture are B. Digestive, circulatory, and respiratory
15. C. IRON is essential for both bone health and muscle contractions.
16. B. FASCIA is the type of tissue that covers and separates skeletal muscles, providing shape and aiding in function.
17. The most common debilitating disorder among Americans under age 45 is C. tension headaches.
18. Tension headaches usually begin in the D. neck.
19. When you sit with good posture, your spine should be A. very relaxed.
20. A/an C. NEUTRAL spine is one that allows for natural curves and arches.
21. Posture and muscular balance can usually be improved by A. exercising and stretching.
22. D. SYNOVIAL is a freely movable joint?
23. Postural muscles tend to C. WEAKEN if they aren't regularly stimulated to produce adequate force.
24. Aerobic production of ATP comes from D. CARBOHYDRATES during high-intensity training.
25. Standing on your toes is an example of D. Second class lever.
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Answer:
1. Option c
2. Option a
Explanation:
1. If there are 50 dominant alleles, this represent the frequency of dominant alleles p = 50/100 = 0.5
Using the formula p+q = 1 we can solve for the frequency of the recessive alleles q = 1 -0.5 = 0.5 = 50%.
2. the frequency of the recessive allele for a gene is 0.3 which is q = 0.3
From the Formula p + q = 1 we can solve for p the frequency of the dominant alleles = 1 - 0.3 = 0.7
To calculate for the number of heterozygotes, we use 2pq = 2 x 0.7 x 0.3 = 0.42
They both utilize their ability of photosynthesis.
Your eye color which is controlled by many interacting genes
