Answer:
True
Explanation:
Different air pressures zones in a area creates a stream of wind. Though, it isn't visible, air pressure affects the weather pattern to a great extent. Rising air creates low pressure while sinking air creates high pressure.
For a person to develop Huntington's disease, he must be homozygous (HH) or heterozygous (Hh) for the dominant allele.
<h3>What are the possible genotypes and phenotypes?</h3>
Huntington’s disease is a type of defective dominant disease. This means that any person having 1 or 2 defective dominant genes, have the disorder. But, if a person has 2 recessive genes, they are normal.
Mom (Hh) x Dad (Hh)
H h
H HH Hh
h Hh hh
- Genotypes: HH, Hh, hh (1:2:1)
- Phenotype: Huntington’s disease, Normal (3:1)
- Genotypic percent: 25% HH, 50% Hh, 25% hh
- Phenotypic percent: 75% Diseased, 25% normal
Cystic fibrosis is a type of a recessive disease i.e., a person having 1 or 2 dominant genes is normal. But a person having 2 mutated recessive genes are diseased.
- Normal: CC, Cc
- Cystic fibrosis: cc
- Homozygous normal: CC
- Heterozygous normal: Cc
- Homozygous cystic fibrosis: cc
Learn more about Huntington's disease here:
brainly.com/question/4444197
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Answer: Red Volcanic Rock
Explanation: Extrusive igneous rocks, also known as volcanic rocks, are formed at the crust's surface as a result of the partial melting of rocks within the mantle and crust.