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AlladinOne [14]
3 years ago
10

Our Secret Universe The Hidden Life of the Cell

Biology
1 answer:
rodikova [14]3 years ago
3 0
Oooh wordd thats cool
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Brown hair is dominant over red hair. What will the genotypes and phenotypes of the offspring of a cross between a homozygous br
bija089 [108]

Answer:

1) Firstly, lets sort out the alleles for the dominant and recessive characteristics. The dominant brown allele will be written as B and the recessive red hair allele will be written as b.

2) Lets sort out the genotype of the parents. The parent having homozygous brown coloured hair will carry the alleles BB. The parent carrying the heterozygous brown coloured hair will carry the alleles Bb.

3) The punnet square from these parents will be drawn as follows:

      B        b

B    BB     Bb

B    BB     Bb

4) Now, lets predict the phenotype of the offsprings. The results from the punnet square show that all of the offsprings will have brown coloured hair.

5) The genotype for the children will have 50% chance to be homozygous brown (BB) and 50% chance to be heterozygous brown (Bb).

5 0
3 years ago
Shelby performed an investigation in which she monitored her heart rate while she ran on a treadmill. She used a heart rate moni
Diano4ka-milaya [45]

Answer:

Oxygen

Explanation:

6 0
3 years ago
In many tropical rainforests, people clear land by cutting down trees and burning them. After a few years, the soil runs out of
julia-pushkina [17]

Answer:

The polution from burning the trees. Also, the loss of oxygen from the loss of trees.

Explanation:

hope this helps a little

8 0
2 years ago
A researcher is using the pUC18 vector to introduce a human gene into bacteria. He exposes bacteria to this recombinant molecule
allsm [11]

Answer:

The results from this experiment conclude that all of the resulting bacteria contain the pUC18 plasmid without the human gene.

The method of genetic engineering might seem very easy but in actual it is a very difficult task and most of the time a person won;t get the expected results. The chances of a vector to actually take up a recombinant DNA are very less. Even after this, the chances of a recombinant plasmid to enter a bacterial cell by transformation are very few.

5 0
3 years ago
According to the phylogenetic tree, which domains are more genetically related?
quester [9]

Answer: The correct answer is- Archaea and Eukarya.

As per the information about the (phylogenetic tree) given in the question,

the last branch of the phylogenetic tree begins with the line of Eukarya and then holds the species of the Archaea division, which includes those prokaryotic organisms that live in extremely harsh environmental conditions ( such as Methanobacterium, and extreme halophiles).  

As this last branch holds species of two domains ( from 3 domain system of classification that includes Bacteria, Archaea, and Eukarya) , which are Archaea and Eukarya as it begins with Eukarya and later on holds the species of Archaea.

Thus, it shows that Archaea and Eukarya are more genetically related.

3 0
3 years ago
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