They compare the number of mutations to determine how long ago species separated and evolved.
Question is incomplete. Complete question has been attached.
Answer:
Hemophilia is an X-linked recessive disease. Let the normal allele be represented as XH and the mutant allele be represented as Xh. Here,
hemophilic male = XhY
hemophilic female = XhXh
When XhY X XhXh the punnett square will be as follows:
Xh Y
Xh XhXh XhY
Xh XhXh XhY
The entire progeny will be hemophilic since only Xh allele was passed on by both the parents.
It helps the plants make oxygen for us and it provides food for the plants through photosynthesis. It makes life possible on Earth by providing us light. Without light the Earth would be frozen.
Answer:
a.energy source ,either sunlight or chemicals
Explanation:
the animals using sunlight are known as photoautotrophs and the animals using chemicals are known as chemoautotrophs.
Answer:
1,000 kcal
Explanation:
As a general rule, every trophic level only gains 10% of the energy from the trophic level.
So, the grass has 100,000 kcal of energy. Assuming the bird eats grass, it only gets 10,000 kcal of energy. Assuming the fox eats the bird, it only gains 1,000 kcal of energy.