Answer:
Mother- XXH
Father- XHY
Explanation:
The mother is a carrier for hemophilia and since the disease is sex linked and found on the X chromosome, only one of the alleles has that H allele attached to it. The father is male so he only has one X chromosome, which is why he is effected by the disease and not just a carrier like the mother.
The first one should be right
Hope this helps idk much tho GBU:)
Answer:
cardiac
Explanation:
An electrical stimulus is generated by the sinus node (also called the sinoatrial node, or SA node). This is a small mass of specialized tissue located in the right upper chamber (atria) of the heart. The sinus node generates an electrical stimulus regularly, 60 to 100 times per minute under normal conditions.
Answer:
This question lacks options, however, it can be answered based on general understanding of forest layers.
The difference in photosynthetic rate is as a result of the amount of sunlight received by plants in the canopy and the forest floor.
Explanation:
Canopy of a forest refers to the collection of the crowns of trees found above the ground layer of a forest while the forest floor is the ground level of the forest. Plants that grow in the canopy are directly exposed to sunlight and receives most of the light from the sun while plants that grow in the forest floor are least exposed to sunlight as the crowns of the plants in the canopy covers/masks them.
Based on this, the rate at which the plants in the canopy layer photosynthesize will he higher than that of the plants in the forest floor because the amount of sunlight is a determinant of the photosynthetic rate.
Answer:
Evolution
Explanation:
Photosynthesis happens every day
