Answer:
21 chromosomes
Explanation:
Somatic cells are a diploid which have 2 sets of chromosomes. If two sets are 42 chromosomes, one set must be 21 chromosomes. Gametes are a haploid which have only 1 set of chromosomes. So in each gamete, there should be 21 chromosomes.
The forearm of birds, reptiles, and humans illustrates a homologous body structure.
- Similar physical characteristics found in species with a shared origin are known as homologous structures, although these characteristics have entirely different biological purposes.
- The limbs of humans, cats, whales, and bats are examples of homologous structures.
- All of these structures—arm, leg, flipper, and wing—are supported by the same type of bone structure.
- The arms of a person and the wings of a bat are excellent examples of homologous structures. Because both bats and people are mammals, they have a common ancestor.
- Even though they appear considerably different from one another from the outside, a bat's wing and a human arm have remarkably comparable internal bone structures.
- Wings help bats fly, whereas arms enable human interaction with their environment. The wing and the arm also have various purposes.
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Answer:
C- Geothermal and solar energy are both renewable, while nuclear energy is not.
Explanation:
edge 2021
Somatic mutations are genetic mutations. The best answer is b. they can cause different types of cancer. Somatic mutations do not only occur in reproductive cells. Mutations that occur only in reproductive cells are known as germ line mutations. Somatic mutations are mutations that occur after conception. They are mutations in the DNA structure. They can cause cancer but are not always cancer causing. They are often caused by exposure to environmental factors including ultraviolet radiation and exposure to certain chemicals.
Answer:
I think the answer is D ... but I am having a second thought I think it is B