Heterozygous is a term used in genetics to describe when two variations of a gene (known as alleles) are paired at the same location (locus) on a chromosome. By contrast, homozygous is when there are two copies of the same allele at the same locus.
The term heterozygous is derived from "hetero-" meaning different and "-zygous" meaning related to a fertilized egg (zygote).
Determining Traits
Humans are called diploid organisms because they have two alleles at each locus, with one allele inherited from each parent. The specific pairing of alleles translates to variations in an individual’s genetic traits.
An allele can either be dominant or recessive. Dominant alleles are those that express a trait even if there is only one copy. Recessive alleles can only express themselves if there are two copies.
One such example is brown eyes (which is dominant) and blue eyes (which is recessive). If the alleles are heterozygous, the dominant allele would express itself over the recessive allele, resulting in brown eyes. At the same time, the person would be considered a "carrier" of the recessive allele, meaning that the blue eye allele could be passed to offspring even if that person has brown eyes.
Alleles can also be incompletely dominant, an intermediate form of inheritance where neither
Answer: "regulating important involuntary bodily functions such as blood pressure, heart rate, breathing and swallowing".
Explanation:
The area highlighted in this example is the posterior part of the brain, called the brainstem. The brainstem is comprised of three important parts, the medulla, the pons and the midbrain. The basic functions of this brain area include breathing, heart rate and sleeping.
Answer:
Lithosphere and asthenosphere
Explanation:
The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The asthenosphere is partially molten upper mantle material that behaves plastically and can flow.
Answer:
because taxes and prices in the stockmarket are going up so they have enough money so they lower the prices
Explanation:
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