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Marina CMI [18]
3 years ago
10

The Manx mutation, which produces no tail in cats, is a recessive lethal. What phenotype ratios would be expected from a cross b

etween two Manx cats?A. ¾ Manx: ¼ normalB. ¾ normal: ¼ ManxC. ⅔ Manx : ⅓ normalD. All Manx
Biology
1 answer:
AURORKA [14]3 years ago
7 0

Answer:

D

Explanation:

As both parents are Manx cats, their genotypes would be rr. Performing a cross, we know that all the resulting offspring can only have one possible genotype, which is rr, making them Manx cats as well. Hence, all their offspring would be Manx cats.

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4 years ago
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If there are 10 chromosomes in a particular cell at the start of prophase how many will be present in the same cell at the end o
Ilia_Sergeevich [38]

Answer:

20 chromosomes

Explanation:

Mitosis is a kind of cell division that results in daughter cells with same number of chromosomes as the parent cell. It involves stages including Prophase, Metaphase, Anaphase and Telophase. In prophase, the Chromatin condenses into Chromosomes.

In Anaphase stage, the 10 chromosomes as mentioned in the question divides into opposite poles of the cell. One individual chromosome contains two sister chromatids, which actually separates in the Anaphase stage. Hence, at the end of the Anaphase stage, there will be 10 chromatids each at opposite poles of the cell. Each chromatid at this stage is considered a chromosome.

Hence, a cell with 10 chromosomes will contain 20 chromosomes (10+10 chromatids on each pole) in the Anaphase stage just before the cell divides into two in a process called CYTOKINESIS.

4 0
3 years ago
He diagram shows the genetic code, which cells use to translate a nucleotide sequence into an amino acid sequence in a protein.
Zinaida [17]

Answer:

I believe it is A, but I could be wrong.

Explanation:

I think this, because when it says, "Other, less useful, versions of the genetic code were eliminated gradually throughout the course of evolution", I think it referencing to the fact that all animals and etc, are made up of common codes, and how over time, through evolution, certain codes were eliminated, because creatures were evolving.

7 0
3 years ago
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8090 [49]

Answer:

Explanation:

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3 0
3 years ago
This question refers to the abo blood type locus. remember that the a and b alleles are codominant to each other and both are do
Fittoniya [83]
The man with blood type  A might have one of two genotypes:
1. Iᵃ  Iᵃ<span> 
2. </span>Iᵃ  i
In this case, Iᵃ is an allele for A group, and i is an allele for 0 group.
The ABO blood type is controlled by a single gene (the ABO gene) with three types of alleles (Iᵃ   Iᵇ    and   i)
6 0
3 years ago
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