Answer:
a. occurs right before the best growing season
Explanation:
Seed dormancy prevents seeds from germinating in unsuitable conditions such as competing for light and water with other plants or being able to be eaten from a high population of herbivores species during certain seasons.
If a dormant seed is broken after prolonged cold treatment, then this cold part of the year occurs right before the best growing season for this dormant seed. The native habitat of the plant must have an undetermined and cold season that breaks seed dormancy.
Answer:
B. only chemoreceptors, mechanoreceptors, thermoreceptors, and nociceptors
Explanation:
Receptors are chemical structures, that receive and transduce signals that may be integrated into biological systems.
Receptors that can be found in the mouth include: chemoreceptors, mechanoreceptors, thermoreceptors, and nociceptors.
<u>Chemoreceptors</u>
These are receptors that detects chemical stimuli, either molecules or ions dissolved in liquids. An example would be our taste buds in the mouth, because they respond to specific molecules or ions in our ingested food.
<u>Thermoreceptors</u> responds to changes in temperature. These receptors are present in the oral cavity, skin and hypothalamus.
Mechanoreceptors are receptors that respond to distortion of the plasma membrane that occurs due to touch, pressure, vibration, stretch, stress or strain
. They can be found in the mucosae of ginviva (gum), cheek, tongue and soft and hard palate.
<u>Nociceptors</u> are receptor responds to painful stimuli. The purpose of nociceptors is to inform the body of injury, damage or threat of damage to body tissues so that a response may be made. They can be found in the tooth pulp and within dentine cavity.
Answer:
False
Explanation:
heterozygous means there are two different alleles. So the trait would be written as Bb. I can't write the other option because it counts it as a swear word but it means that there are two identical alleles. So it would be written as BB
Answer:
Option B, No
Explanation:
Complete question is as follows -
You have spent time working with a population of beetles. Sexually mature males range in size from 2-6 cm in length. You realize that the females only mate with males that measure less than 3 cm long. If you measured allele frequencies at a single gene (locus) that contributes to overall length, would you expect this population to be in H-W equilibrium from one generation to the next?
Select one:
a. Yes
b. No
Solution -
No, because Hardy Weinberg’s equilibrium theory is not applicable in practical scenario as it assumes that H-W equilibrium persists from one generation to the other only when these is no disturbing factor . These disturbing factors include – natural selection, non-random mating, genetic drift, gene flow and mutations. Since this theory works only in an idealized state where no such disturbances occur, it is very difficult to say that the beetle population can remain in H-W equilibrium. Also the females in the beetle population are selecting the males for mating thereby exhibiting sexual selection. Hence, H-W equilibrium will not be applicable.
Hence, option B
Answer:
Codominance
Explanation:
Codominance is when two dominant traits are equally dominant, and therefore they both are expressed in the offspring's phenotype. For example, if in a flower, blue (BB) and red (RR) are codominant their offspring would be both red and blue. One of the common examples of codominance in humans is blood type, which is seen in AB blood since A and B are equally dominant.
