Answer:
The options are
A. both homzygous dominant
B. both homzygous recessive
C. both heterozygous
D. one homzygous dominant, one homzygous recessive
The answer is C. both heterozygous
Since it’s in the ratio of 1:2:1 the genotype will be Rr and Rr.
Answer:
1. The observable universe
2. the moon
3. false
4. a black hole
5.
6. moving away from us
7. stretch as the galaxies move away from us
8. expanding
9. cosmic microwave background
Missing choices:
a) hermaphroditism
b) budding
c) fragmentation
d) fission
e) regeneration
<span>Sexual reproduction includes a reproductive pattern called A. HERMAPHRODITISM.
Hermaphroditism is defined as a condition that a single organism has both male and female reproductive organs.</span>
The water cycle is a parameter of the hydrosphere that always remains constant. Life on Earth and its sustenance is possible because of this cycle. The continuous evaporation, condensation, and precipitation of water provides for the many processes involved in Earth's natural surroundings. Without the water cycle, life would cease to exist.
Answer:
The correct answers are:
1. closing
2. the ventricles and arteries,
3. a constricted trachea
Lub is the first sound of a heartbeat and is mentioned as S1. It is usually produced due to the closing of tricuspid and and mitral or bicuspid valves present between atria and ventricles.
Tricupsid is located between atrium and ventricle of the right hand side and mitral valve is located between atrium and ventricle of the left hand side. They prevent the back flow of blood from ventricles to their respective atria.
Dub, being the second sound is written as S2. It is produced due to the closing of pulmonary (located between right ventricle and pulmonary artery) and aortic valves (located between left artery and aorta).
These valves prevent the back flow of blood from arteries into the ventricles.
The time between the two sounds is often taken as the measure of the diastole i.e. ventricular filling.
Wheezing refers to a high-pitched sound produced when a person breathes, especially during exhale. It is caused by constriction of the airways or inflammation. It is considered as a symptom of various diseases such as asthma, COPD, allergies, bronchitis etc.
