<h2>꧁༒Answer༒꧂</h2>
O ribosome
the dark organelles labelled E is called the Ribosomes. Ribosomes are where the protein is synthesized. proteins are required by humans for a number of functions. The process by which Ribosomes synthesize proteins is called translation.
Answer:
Pollination is a form of sexual reproduction and adds new gene combination to the progeny. These new gene combinations impart new genetic traits to progeny.
Explanation:
Pollination includes landing of pollen on the stigma of the same flower or another flower of same species. Since it is followed by fusion of male and female gamete to form an embryo, new gene combination and new genetic traits are imparted to the progeny.
Since the Dr studies genetic traits, sexual reproduction in the plant would allow him to observe more genetic variations in the traits.
Answer:
All of the above are correct.
Explanation:
The plasma membrane is the selectively permeable membrane that allows the movement of some selected particles only. Different types of movement like diffusion, osmosis and active transport occurs in the body.
Glucose acts as the primary energy source of the body. Glucose can be reabosrbed in the body by the facilitated diffusion and by the secondary active transport as well depending on the site of the cell. Glucose can enter in the peritubular capillaries as well.
Thus, the correct answer is option (d).
Populations of organisms that exhibit a high degree of variation have a greater chance for survival than populations of organisms that show little variation is described below.
Explanation:
- Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Mutations are the ultimate source of new alleles in a gene pool. Two of the most relevant mechanisms of evolutionary change are: Natural Selection and Genetic Drift.
- The genetic variation in the population is increasing due to selective pressure. The genetic variation in the population is decreasing due to selective pressure. The genetic variation in the population is increasing due to gene flow. The genetic variation in the population is decreasing due to gene flow.
- Genetic drift is a random change in allele frequencies. These random changes in allele frequency can accumulate over time. ... Small samples can vary more markedly from the larger sets from which they are selected than larger samples, so genetic drift is more powerful in smaller populations
- Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population.
Fitness is a measure of reproductive success (how many offspring an organism leaves in the next generation, relative to others in the group).