If a woman takes HIV medicines during pregnancy and childbirth and her baby receives HIV medicines for 4 to 6 weeks after birth, the risk of transmitting HIV can be lowered to 2% or less. Most HIV medicines are safe to use during pregnancy, and don't increase the risk of birth defects.
In general, the infected mother should simply stay healthy and intake HIV medicines while she is pregnant.
Answer:
d. incomplete dominance
Explanation:
When none of the alleles of a particular locus completely masks the expression of the other allele of the same gene, it is called incomplete dominance. If the allele B gives "blue" phenotype and allele b gives white phenotype, a cross between blue (BB) and white (bb) parents would produce all the progeny with genotype Bb. Since the allele B does not completely prevent the expression of allele b in the heterozygous condition, the phenotype of the F1 hybrids would be "light blue". Therefore, it is an example of incomplete dominance.
blue (BB) x blue (BB) = all blue (BB)
white (bb) x white (bb)= all white (bb)
blue (BB) x white (bb)= all light blue (Bb)
The ocean - ocean deep uptake
Answer:
1. Dissolved oxygen (DO) test quantifies dissolved oxygen in the water.
Impact: required for the use of oxygen (aerobic respiration) decomposition
2. Ammonia test measures the level of ammonia.
Impact: leads to algal blooms
3. Carbon dioxide test quantifies carbon dioxide
.
Impact: Increased CO2 leads to decreased water pH
Decreased CO2 decreases rate of photosynthesis
Explanation:
- Dissolved oxygen is a basic water quality test that measures the amount of dissolved oxygen in the water. This test is universally conducted in all settings involving the use of water either for drinking or farming. Oxygen is an important component of cellular respiration. It is the terminal electron acceptor in the electron transport chain and is crucial for energy production to govern life processes.
- The level of algal growth is an indicator of the health of an aquatic ecosystem. Ammonia is a source of nitrates, a nitrogen source required by plants and algae for optimum growth and development. Increased levels of ammonia promote unchecked algal growth, ultimately leading to the formation of algal blooms.
- Carbon dioxide affects multiple aspects of aquatic life. Aquatic plants and algae require carbon dioxide for photosynthesis. Decreased or lower than optimum amounts of CO2 lead to decreased photosynthesis, ultimately causing plant death. Increased CO2 leads to the formation of excessive amounts of carbonic acid. Increased CO2 hinders normal gaseous exchange in aquatic animals and fish.
The right one is d. homozygous dominant
