What is the haploid number of this cell to the right? Is it haploid or dipoloid?
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Question
What is the haploid number of this cell to the right? Is it haploid or dipoloid? If crossing over occurred between genes B and C on the chromosomes to the right, what would the genotypes of the resulting chromosomes be? If 2 alleles are contaminant, what do the heterozygotes look like? An individual has the genotype RrDd. List the gamete genotypes that result from meiosis Suppose that the B and T genes arc on the same chromosome, and that an individual has alleles B, b, T, and T. How would you write this individual's genotype? Suppose that the B and T genes are on different chromosomes, and that an individual has alleles B, b, T, and T. How would you write this individual's genotype?Explanation / Answer
Answer 1) As we see that there are 8 chromosomes in the given cell and they are very different from each other. some chromosome may look like a pair because of poor resolution in the given diagram, but all the chromosomes can not be put together in the pair of twos. hence, the given cell is a haploid which contains 8 chromosomes or 8 haploid chromosomes.
Answer 2) In this case of crossing over between genes B and C on the given two chromosomes will result into the exchange of chromosomal segments containing AB and ab to the other chromosome. therefore, the resulting genotypes would be abCDE and ABcde.
Answer 3) In a heterozygous condition both the alleles of a gene are present in the same cell/organism. while the co-dominance is the inheritance condition in which both the alleles are showing their phenotype. hence, in this case, the heterozygous individual will show characters of both the alleles at the same time.
Answer 4) we know that meiosis results in the formation of haploid cells (gametes) from a diploid cell. if 2n is the diploid cell, then it would result in the haploid cell having n number of chromosomes after meiosis. in this case, RrDd will segregate to give rise to 4 types of cells such that RD, Rd, rD, rd.
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