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1) recessive allele is b
dominant allele is B
When an X chromosome contains the dominant allele,is written as:

</span><span>When an X chromosome contains the recessive allele, is written as:

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2) the genotype of the woman is
She is not color-blind but she is a carrier of red-green color blindness, who passed the allele to their sons.
Woman, have two X chromosomes. If she is not colorblind is because there is the dominant allele making her see normally. But, she is a carrier, so while one X chromosomes has the dominant allele, the other has the recessive (making her carry the disease).
Answer:
He can infer that beriberi may be related to diet, but more and better studies are needed
Explanation:
Answer: diversity of niches
, large area and warm climate
Explanation:
An ecosystem is a biotic community in which the living beings interact with their non-living physical environment. The following factors which are responsible for higher biodiversity in an ecosystem:
Diversity of niches: A niche can be define as the functional role an organism performs in an ecosystem so as to sustain it's life. For example the type of habitat, food and breeding season chosen by the organism. With the increase in the differences in the diversity of niches the organism exhibit variations and differences from the members of the same species or from the members of the other species.
Large area: The large area can support the reproduction and abundance of members which belongs to different species hence will help in promoting higher biodiversity in a region.
Warm climate: The warm climatic range will offer the chances of adaptations to the living organisms to sustain their lives in harsh environmental conditions. This will lead to evolution of new species from the parent species.