Complete question:
You will find the image of the skulls in the attached files.
Answer:
1) 2 similarities between each of the skulls might be the presence of the nasal spine, and the interdental space.
2) The size of the skull seems to be the most noticeable change in skull anatomy between the dawn horse and the modern horse.
Explanation:
- Each of the nasal bones in horses ends in a protuberance named "the nasal spine". These spines converge in the distal portion of the bone. These spines and the incisive bone delimitates the space called the naso-incisor notch. In the attached figure you will see the nasal bone in red and the nasal spines. This structure is present in all the skulls in the same position.
- The interdental space is the space left between the front teeth and the back teeth. It is useful to recognize a male from a female in modern horses. This space can be found in all the skulls. You will see it in blue in the image.
The biggest change in skulls between the dawn horse and the modern horse is the size. The skull keeps the original shape or very similar shape but varies in length and height.
Answer:
The heat sensitive polymerase would be denatured resulting in formation of little or no PCR products.
Explanation:
PCR is a technique that forms multiple copies of a small DNA sample. For the purpose, the DNA sample is exposed to very high-temperature conditions (around 95 degrees C) to facilitate the denaturation of DNA helix. These high-temperature conditions denature enzymes such as heat-sensitive DNA polymerases. Therefore, no or very little DNA molecules will be formed by the end of the process as the denatured DNA polymerase would not be able to extend the primers.
To avoid these conditions, heat-tolerant Taq polymerase is used in PCR which can withstand the extremely high-temperature conditions of PCR.
Answer:
This is an example of co-dominance
Explanation:
Although there isn't a question here, from looking online, I think I found the question which is
What is the inheritance?
- Incomplete dominance
- co-dominance
- complete dominance
Co dominance occurs when two alleles of a given trait are expressed equally. The clue we are given here that points us towards this is "Short-long is marked by a pattern of alternating short and long strands of fur over the surface of the fuzzy wuzzy."
This means both traits are expressed, giving an alternative phenotype of short long. Incomplete dominance might instead produce medium length fur.
Lets call the alleles L for long and l for short.
- LL would be long
- ll would be short
- Ll would then be short-long.
We are told that Two long fuzzy wuzzies mate and produce all long fuzzy wuzzies. That is because LL x LL would produce all LL offpsring.
We are also told that two short fuzzy wuzzies mate and produce all short fuzzy wuzzies. That is because ll x ll would produce all ll offspring.
Two short-longs mate and produce some shorts, some longs and some short-longs. That is because Ll x Ll can produce LL, ll, and Ll.
All living things, carbon is attached to oxygen and carbon dioxide is used to to make food grow. Without the carbon cycle the earth would be frozen.
