안녕하세요!

12번 문제에서 나온 3번 chromosomes 들을

homologous chromosomes 라고 지정하기 위해선

반대쪽, 상보적인, 즉 다른 부모로부터 받은 chromosome 들도 같이 지정이 되어야 해요.

그래야 "둘 사이의 관계가" homologous chromosomes 라고 부를 수 있는거에요.

two separate chromosomes are required for their relationship to be described as homologous.

우리에게 주어진 도형에서,

we are looking at 2 pairs of chromosomes.

For example,

Chromosome A are the long ones (1,2 // and the pair labeled 3)

Chromosome B are the short ones (pairs labeled 4 // 6)

Taking the example of chromosome B,

we assume that pair 4 came from mom, pair 6 came from dad,

hence chromosomes 4 and 6 are considered "homologous chromosomes".

Within pair 6, we can see two sister chromatids still joined together 

(not yet undergone meiosis, just replication)

one labeled 5 and the one immediately next to it.

These two would be considered sister chromatids,

just like labels 1, 2 are showing sister chromatids.

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열공하시고 혹시 또 질문이 생기면 게시판에서 만나요! :D