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artcher [175]
3 years ago
10

Modern europeans may have acquired genes that helped them adapt to the cold and absorb more vitamin d through interbreeding with

:
Biology
1 answer:
notsponge [240]3 years ago
3 0
Around 100,000 years ago there was a second hominine species closely related to modern humans,  Homo <span><span>neanderthalensis,</span><span> or commonly called the Neanderthal</span>.</span> Recent studies of neanderthal DNA have shown that there is 3-4% of their genes in modern humans outside of Africa, mostly from Europe, including the ones for adapting to the cold and vitamin D absorption. 
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If Mr. and Mrs. Johnson had four children together, what color of hair would the children likely have?
Ksju [112]
If the parents have black hair then all the kids would have black hair (a)

if one parent has blonde hair and the other has black hair then 2 kids would be blonde and 2 would have black hair (d)

if the parents have blonde hair then the kids would have blonde hair (c)
7 0
2 years ago
Prader-Willi syndrome is a genetic disorder involving a partial deletion of chromosome 15q on the paternal chromosome. When both
Kay [80]

Answer:

genomic imprinting

Explanation:

Genomic imprinting is a mechanism for regulating gene expression that allows expression of only one of the parental alleles, although both alleles are functional. Unlike most genes in which expression is biallelic, genes that are subjected to this mechanism (imprinted genes) have monoalelic expression; By definition, in an imprinted loci, only one allele is active (maternal or paternal), and the inactive is epigenetically marked by histonic modification and / or methylation of cytosines.

Genomic imprinting can cause some disturbances, among them Prader-Willi syndrome, which is a genetic disorder that involves a partial deletion of chromosome 15q on the paternal chromosome.

3 0
3 years ago
A translocation that moves a gene from an area of euchromatin to heterochromatin would typically cause a(n) ________ in the expr
Advocard [28]

A translocation that moves a gene from an area of euchromatin to heterochromatin would typically cause a(n) reduction in the expression of the gene.

<h3>What is euchromatin?</h3>
  • A kind of chromatin that is sparsely packed, enriched in genes, and frequently engaged in transcription is called euchromatin.
  • Contrasting with heterochromatin, which is compact and less accessible for transcription, is euchromatin.
  • The human genome has 92% euchromatic DNA.
<h3>What is heterochromatin?</h3>
  • Heterochromatin, often known as condensed DNA or densely packed DNA, has many different types.
  • Between constitutive heterochromatin and facultative heterochromatin, these variations fall on a spectrum. Both contribute to how genes are expressed.
  • Eukaryotic genomes contain heterochromatin, which serves a variety of purposes including regulating gene expression and preventing DNA replication and repair.

Learn more about euchromatin here:

brainly.com/question/12318627

#SPJ4

3 0
1 year ago
What makes an energy source renewable?
AleksAgata [21]
Clean energy like solar wind and water
5 0
2 years ago
Two Scientists are discussing which two organisms are more closely related to each other. Scientist 1 proposes that the cow and
vekshin1

Answer:

cow and dolphin. D.

Explanation:

5 0
3 years ago
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