Answer
Just think critically about why (if you were an egg laying species), having a fetus/baby develop inside of you would be advantageous.
For one, eggs are much less protected from outside factors such as predators, temperature, etc than live birthed creatures. Live birth provides protection inside the mothers body from things such as heat, cold, moisture, predatory animals, etc. An egg laying animal must keep its eggs at a perfect temperature and check to make sure no other animal has eaten them.
Law of segregation states that <span>gametes carry one allele for each trait
As it states that
</span>that during the production of gametes the two copies of each hereditary factor segregate<span> during the production of gametes</span> so that offspring acquire one of the two allele from each parent
so option C is correct
hope it helps
Answer:
15
Explanation:
According to linkage theory, two genes present on the same chromosome tend to get inherited together. So the gametes produced are not equal in number and parental type offspring are observed more in number than the new recombinant types.
Here, normal wings, red eyes (420) and vestigial wings, purple eyes (430) are most in number hence they are the parental type offspring.
Vestigial wings, red eyes = 80 : recombinant
Normal wings, purple eyes = 70 : recombinant
Distance between two genes in cM = recombination frequency = (total number of recombinants / total progeny)*100
= [(80+70)/(420+80+70+430)]*100
= (150/1000)*100
= 0.15*100 = 15cM
Answer:
The answers are:
- Type 2 (fast twitch) muscle fibers - type A: b. muscle fibers that help with a long sprint or carry a heavy object a short distance
- muscular strength: d. the muscle's capacity to exert force against resistance
- Type 1 (slow twitch) muscle fibers: a. muscle fibers responsible for endurance
- Muscle endurance: c. refers to the ability to perform a specific muscular action for a prolonged amount of time.
- Type 2 (fast twitch) muscle fibers - type B: e. muscle fibers used in short explosive movements such as jumping or lifting a very heavy weight one or two times.
Explanation:
Types of Skeletal Muscles:
Skeletal muscle are divided into two types:
- Slow Twitch (Type 1)
- Fast Twitch (Type 2)
- Slow twitch muscles are the first ones to contract at times of exercise of strenuous physical activity. A compared to fast twitch muscle fibers, they contract slowly but can sustain contraction for a long time.
- Fast twitch muscle fibers are divided into two subtypes: Type 2A and Type 2B.
- Type 2A muscle fibers produce a high amount of force but they fatigue rapidly.
- Type 2B muscle fibers, fire last, produce the most amount of force but wear out very rapidly.
Muscle Characteristics:
- Muscle endurance is the muscle's ability to contract with force against a resistance for a prolonged time period.
- Muscle strength is a measure of the amount of force a muscle can produce against resistance.
