Question

for example, this model shows the 23 homologous pairs of chromosomes in a female human somatic cell. the gene for blood type is found on chromosome 9. this individual inherited the allele for blood type a from their mother and the allele for blood type b from their father. select the true statements. within an organism, different chromosomes are found in different somatic cells. diploid cells contain one set of chromosomes inherited from each parent. both chromosomes in a homologous pair come from the same parent. both chromosomes in a homologous pair contain the same genes.

Explanation:

• For the first statement: Somatic cells are diploid and have the same set of chromosomes. So, the statement “Within an organism, different chromosomes are found in different somatic cells” is false.
• For the second statement: Diploid cells have two sets of chromosomes (2n), one from each parent. So, the statement “Diploid cells contain one set of chromosomes inherited from each parent” is true.
• For the third statement: Homologous pairs consist of one chromosome from the mother and one from the father. So, the statement “Both chromosomes in a homologous pair come from the same parent” is false.
• For the fourth statement: Homologous chromosomes carry the same genes (but may have different alleles). So, the statement “Both chromosomes in a homologous pair contain the same genes” is true.

Answer:

• “Diploid cells contain one set of chromosomes inherited from each parent.”
• “Both chromosomes in a homologous pair contain the same genes.”