Autosomal recessive inheritance: two unaffected people who each carry one copy of mutated gene for and autosomal recessive disorder (carriers) have a 25% chance with each pregnancy of having a child affected by the disorder.
The characteristics of living things are as follows:
- Movement or locomotion
- Respiration
- Nutrition
- Irritability or sensitivity
- Growth
- Excretion
- Reproduction
- Death
<h3>WHAT ARE LIVING THINGS:</h3>
- Living things are organisms that possess life in them and can perform certain functions unique to them.
- These functions are the characteristics of living things. The following are the characteristics of living things:
- Respiration
- Nutrition
- Irritability or sensitivity
- Growth
- Excretion
- Reproduction
- Death
Learn more about living things at: brainly.com/question/17074249
Answer:
Option D, A subject is observed both before and after two exposures to the treatment.
Explanation:
In A-B-A-B design the alphabets have following meaning
a) First A – It is the baseline value or the value measured before treatment
b) First B – It is the treatment measurement
c) Second A - It is the withdrawal of treatment
d) Second B – It is the reintroduction of treatment
The second A is known as the reversal phase in which the intervention is withdrawn to see if the target behavior returns to the baseline behaviour
Thus , there are two measurements involved one before the intervention and second after the intervention
Option D is correct
