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Alex787 [66]
3 years ago
5

You and your roommate do a genetic analysis and learn that you share the same maternal ancestor 15,000 years ago in Europe. Whic

h genetic material did you analyze to get this answer?
Biology
1 answer:
Vesnalui [34]3 years ago
4 0

Answer:

Mitochondrial DNA.

Explanation:

Mitochondria is known as the power house of the cell and one of the important organelle responsible for the production of energy. Mitochondria contains its own DNA.

To understand the maternal ancestor history, the mitochondria DNA  must be studied. The mitochondria is solely obtained from the mother as the egg contains large amount of cytoplasm that contains mitochondria. The mitochondria can never be inherited from paternal origin as the sperm contains few amount of cytoplasm and mitochondria.

Thus, the answer is mitochondrial DNA.

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What did the Na (sodium atom) give to CI
ipn [44]

Answer:

A) one electron........

3 0
3 years ago
PLEASE HELP!!!!
il63 [147K]

Answer choices are:


A. Invalidate, because energy should not leave a closed system

B. Invalidate, because the amount of energy should stay constant

C. Validate, because an aquarium is an open system that loses and gains energy

D. Validate, because the amount of energy lost was replaced by matter.

The correct answer choice is:

C. Validate, because an aquarium is an open system that loses and gains energy.


Explanation:


As we know that, the law of conservation of energy is that the total amount of energy of an isolated system prevails to be constant, it is said to be maintained or conserved over time. This law means that energy can neither be created nor be destroyed; rather, it can only be converted or transferred from one form to another.

4 0
3 years ago
A cross between two linked genes was done in coupling configuration and in repulsion. What is expected for the recombination fre
iren [92.7K]

A cross between two linked genes was done in coupling configuration and in repulsion. In coupling, the recombination frequency is greater than 1/16 and in repulsion, the recombination frequency is less than 1/16

If the cross between two linked genes is in coupling, then the recombination frequency is greater than 1/16 having the genotype aabb and phenotype ab.

If the cross between two linked genes is in repulsion, then the recombination frequency is less than 1/16 having the genotype aabb and phenotype ab.

Coupling is the gamete entered having genes from identical parents having same inheritance.

Repulsion is the gamete entered from different parents having separate inheritance.

Genes in coupling configuration on a homologous chromosome have two wild alleles and two mutant alleles on the other homologous chromosome.

Genes in repulsion configuration have a wild allele on one gene and the second gene on other homologous chromosome having a mutant allele.

Learn more about Homologous chromosome here, brainly.com/question/27258467

#SPJ4

8 0
2 years ago
If there is a mutation in the DNA that prevents the GAA enzyme from doing its job, what will happen to the structure and functio
Alenkinab [10]
B is the answer


Your welcome!
5 0
4 years ago
a krabby blind whale has married pearl who has normal vision. oneof their two sons is also colorblind. what arr the genotypes of
Alik [6]

Answer:

Heterozygous dominant (Bb) and homozygous recessive (bb)

Explanation:

This cross involves the gene that codes for color blindness in whales. The allele for no color blindness/normal vision (B) is dominant over the allele for color blindness (b). This means that B will mask the phenotypic expression of b in a heterozygous state (Bb).

According to the question, one of the parents is color blind meaning it possesses the homozygous recessive genotype (bb) while the other parent (pearl) has a normal vision which can either be homozygous dominant or heterozygous dominant since the normal vision allele (B) is dominant.

However, since one of the two offsprings (sons) is also color blind, this implies that the parent with normal vision is heterozygous i.e. contains both dominant and recessive alleles, for the trait. What happens is that, when a bb and Bb parent are crossed, they produce gametes with either a recessive or dominant allele.

The Bb produces gametes with B and b alleles while the bb produces gametes with b and b alleles. When this are crossed using a punnet square, four possible offsprings will be produced with two distinct genotypes: Bb and bb. Hence, this means that there is a 1/2 chance of producing an offspring with the recessive trait from this cross as the case is in the whales.

6 0
3 years ago
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