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satela [25.4K]
3 years ago
14

What two things do scientists use to study the evolutionary trends in vertebrates​

Biology
1 answer:
laiz [17]3 years ago
4 0

Fossil Record and characteristics of today's chordates

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Mendel crossed homozygous tall and short plants. The law of segregation dictates that each sperm of the tall plant randomly pass
Viefleur [7K]

Answer:

D.) If the homozygous tall plant (TT) crosses with a homozygous short plant (tt), then all the F1 plants become heterozygous tall plants (Tt).

Explanation:

Homozygous indicates that the alleles in the genotype are the same. Therefore, the genotype for homozygous tall plants is (TT) and the genotype for homozygous short plants is (tt).

After performing a cross, we know that all of the children will have the heterozygous genotype (Tt).

3 0
1 year ago
Why are antibiotics effective in curing diseases against some pathogens but not others?
Leya [2.2K]

Answer:

The correct answer is "I, II, and III".

Explanation:

The missing options of this question are:

I only

II only

III only

I, II, and III

The correct answer is "I, II, and III".

Antibiotics are of different spectrums of activity depending on the number of pathogens they can kill. They are different reasons for this differences in antibiotic specificity:

I. Antibiotics interrupt processes found in some but not all pathogen cells. For instance, some antibiotics are directed to cell walls that not all bacteria posses.

II. Some pathogens have no metabolic processes to interrupt. The antibiotics that are directed to metabolic reactions of bacteria are not effective in treating viruses because they do not perform this metabolic reactions.

III. Some pathogens have developed genetic resistance to specific antibiotics. Bacteria have a remarkable genetic plasticity having plasmids that can be easily transmitted among them, which give them antibiotic resistance.

7 0
3 years ago
The single stream recycling program that they partner with makes it convenient to
cupoosta [38]

Answer:

Putting items in the recycling bin that can’t be recycled can contaminate the recycling stream. After these unrecyclable items arrive at recycling centers, they can cause costly damage to the equipment. Additionally, after arriving at recycling centers, they must be sorted out and then sent to landfills, which raises costs for the facility.

Explanation: d

8 0
2 years ago
Ques.what will happen if the stretch receptors of the urinary bladder wall are totally removed?
laila [671]
The answer for the given question above would be option A. Micturition is another term for urination. Urination is the act of passing urine which is a reflex phenomenon. <span>As urine accumulates in the bladder, the stretch receptors then are activated and the stimulus is being passed to the spinal cord, then to the brain. In the absence of stretch receptors, the urine would would be accumulated and would probably enlarge.</span>
3 0
3 years ago
Read 2 more answers
Pollution resulting from an oil spill is categorized as point source pollution. true or false?
Musya8 [376]

Answer:

true

Explanation:

i hope this is what you need

3 0
3 years ago
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