The sickle cell pattern based on the family history of Ashleigh isan:
- Autosomal recessive pattern
Based on the given question, we cam see that in the medical history of Ashleigh's family, most of them have had the sickle cell disease which includes her grandmother, one of her uncle's six children has it too, but her father and grandfather did not have the disease.
With this in mind, the inheritance of the sickle cell disease in the family of Ashleigh is one which is autosomal recessive as it affects some people and doesn't affect others because of the pairing of the chromosome which <em>contains the sickle cell trait.</em>
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Read more about sickle cell here:
brainly.com/question/1626483
Answer:
DNA sequences similarity among various organisms may be used to establish evolutionary relationship among living organisms. ... Organisms or animals whose DNA sequences are similar share common evolutionary origin.
Explanation:
Answer:
In the Northern Hemisphere, ecosystems wake up in the spring, taking in carbon dioxide and exhaling oxygen as they sprout leaves — and a fleet of Earth-observing satellites tracks the spread of the newly green vegetation.
Meanwhile, in the oceans, microscopic plants drift through the sunlit surface waters and bloom into billions of carbon dioxide-absorbing organisms — and light-detecting instruments on satellites map the swirls of their color.
Satellites have measured the Arctic getting greener, as shrubs expand their range and thrive in warmer temperatures. Observations from space help determine agricultural production globally, and are used in famine early warning detection. As ocean waters warm, satellites have detected a shift in phytoplankton populations across the planet's five great ocean basins — the expansion of "biological deserts" where little life thrives. And as concentrations of carbon dioxide in the atmosphere continue to rise and warm the climate, NASA's global understanding of plant life will play a critical role in monitoring carbon as it moves through the Earth system.
Explanation:
The answer would be: <span>neuregulin 1
</span>Schizophrenia is a psychiatric disease that involves symptoms related to brain inability to understand reality. Neuregulin 1 or NRG1 found to be linked with schizophrenia. Neuregulin 1 has a role in the neurobiological function and some of it related to the pathophysiology of the schizophrenia.
<span> COMPLETE DOMINANCE:
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<span>Mendel concluded that some alleles are dominant and others are recessive. When one dominant allele is present, it's enough to make the recessive allele unexpressed (this is what happens in heterozygous individuals). In other words, it 'hides' or masks the recessive allele.
CO-DOMINANCE:
-a condition in which both alleles are dominant.
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There are alleles that have the capacity of dominating at the same time, and when an organism is heterozygotic, both alleles are expressed.
For example, a white chicken(WW) crossed with a black chicken (BB): 100% of the offspring being WB. With this genotype, they have black feathers and white feathers.
It's not a blend of colors, but a case where both are expressing.
INCOMPLETE DOMINANCE:
-a condition with none of the alleles is dominant or recessive, so the traits blend in the phenotype.
Some alleles are not completely dominant, and when that's the case the phenotype of a heterozygous organism will be a mix between the phenotypes of its homozygous parents.
For example:
plant 1: RR -red
plant 2: rr- white
By crossing this plants we will obtain 100% of the offspring with a color mix: pink.(genotype: Rr)
Red and white are not completely dominating so it results in a blend of colors.
SEX LINKED TRAITS
Sex chromosomes contain genes that determine the sex of a person. Two X chromosomes result in a female and one X plus a Y result in a male.
In those chromosomes, there are genes specific for each gender, and in those chromosomes, there are genes that code for certain traits- the sex-linked traits.
These traits will be inherited according to the sex chromosomes they receive from their parents.
