Question

when two gametes combine to form a zygote, the resulting diploid cells dna is genetically distinct from both parents. each parent contributes one chromosome to each of the zygotes homologous pairs. so even though the zygote contains the same genes as its parents, it has different combinations of alleles. this leads to genetic variation between the offspring and its parents.this model shows fertilization. one gene on each chromosome is labeled with a letter. each letter represents a different gene, but uppercase and lowercase versions of the same letter represent different alleles. in other words, d and e represent alleles of different genes, but d and d represent different alleles of the same gene.select all the true statements.the zygote inherited different alleles for the e gene from each parent.the two chromosomes in the zygote with the d and d alleles are homologous.the zygote inherited the same allele for the d gene from each parent.the zygote is genetically identical to its mother.

Explanation:

1. For the E gene: The sperm has allele E, the egg has allele e. The zygote inherits both, so it has different alleles from each parent. This statement is true.
2. Chromosomes with D/d and E/e are from each parent, forming a homologous pair (they carry the same genes, different alleles). This statement is true.
3. For the D gene: The sperm has allele D, the egg has allele d. The zygote inherits different alleles, not the same. This statement is false.
4. The zygote has a unique combination of alleles from both parents, so it is not genetically identical to either parent. This statement is false.

Answer:

• The zygote inherited different alleles for the E gene from each parent.
• The two chromosomes in the zygote with the D and d alleles are homologous.