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Normal human lung cells contain two copies of chromosome 3. Together these are called a pair of homologous chr?
Normal human lung cells contain two copies of chromosome 3. Together these are called a pair of homologous chromosomes. How are homologous chromosomes similar and how are they different from one another?
a)Homologous chromosomes are identical to each other in every way.
b)They have the same genes, but they are located in different places on the chromosome.
c)They have the same length and shape but carry different genes.
d)They have the same length and shape and carry the same genes but may have different alleles.
2 Answers
- Anonymous9 years agoFavorite Answer
Answer is d. They have the same genes in the same order, but the alleles may be different and that is why you can have heterozygotes Aa as well as homozygotes AA and aa.
- hamdanLv 45 years ago
shall we anticipate that the homologous chromosomes have heterozygous alleles. for this reason, both pairs may be AaBb. The ensuing haploids cells may be AB, Ab, aB, and ab. With 3 pairs, the genotype may be AaBbCc and the ensuing haploid cells may be ABC, ABc, AbC, aBC, Abc, aBc, abC, and abc. So, 4 cells for 2 pairs and eight cells for 3 pairs.