During prophase 1, homologous chromosomes pair and exchange DNA (homologous recombination) .

在前期 1，同源染色体配对并交换 DNA（同源重组）。

Many animals have similar traits because they're related, called homologous traits.

许多动物有相的特征，因它们是亲缘的，称同源特征。

The other repair mechanism is called homology-directed repair which relies on homologous recombination.

另一种修复机制依赖于同源重组，叫作同源介导修复。

The process of pairing the homologous chromosomes is called synapsis.

同源染色体配对的过程称。

Studying homologous and analogous traits, evolutionary history, and other relationships among living things is called phylogenetics.

研究生物之间的同源和类特征、进化史和其他关系被称系统。

Figuring out if a trait is homologous or analogous can be really hard.

弄清楚一个特征是同源的还是类的真的很难。

Zygotene Chromosomes approximately line up with each other into homologous chromosome pairs through synaptonemal complex.

偶线期染色体通过复合体大致排列成同源染色体对。

Anaphase 1 Kinetochore microtubules shorten, pulling homologous chromosomes, which consist of a pair of sister chromatids, to opposite poles.

后期 1动粒微管变短，将由一对姐妹染色单体组成的同源染色体拉向相反的两极。

Pachytene This is the stage when homologous recombination, including chromosomal crossover (crossing over) , occurs.

粗线期这是发生同源重组的阶段，包括染色体互换。

So if we thought the wings of insects, bats, and pterosaurs were homologous traits, we'd group them together.

所以如果我们认昆虫、蝙蝠和翼龙的翅膀是同源的，我们把它们归一类。

Non-sister chromatids of homologous chromosomes may exchange segments over regions of homology.

同源染色体的非姐妹染色单体可以在同源区域交换片段。

Homologous parts tend to vary in the same manner, and homologous parts tend to cohere.

同源部分倾向于以相同的方式变化，而同源部分倾向于凝聚。

Diplotene The synaptonemal complex degrades and homologous chromosomes separate from one another a little.

双线期复合体解体，同源染色体开始分离。

Different today, but both are inherited from a common ancestor, so they're homologous.

今天不同，但两者都是从共同的祖先继承而来的，因此它们是同源的。

End 1 then pairs up with a complementary strand of the intact homologous DNA region, creating a loop in the homologous DNA.

然后End 1与完整的同源DNA区域上的互补链配对，在同源DNA上形成一个环。

Metaphase 1 Homologous pairs move together along the metaphase plate: the paired homologous chromosomes align along an equatorial plane that bisects the spindle.

中期 1同源染色体对沿着中期板一起移动：成对的同源染色体沿着将纺锤体一分二的赤道平面排列。

However, the homologous chromosomes of each bivalent remain tightly bound at chiasmata, the regions where crossing-over occurred.

然而，每个二价体的同源染色体仍然紧密结合在交叉部位，也就是发生交叉的区域。

Then End 1 releases the homologous DNA and its last few nucleotides bind to the last nucleotides of End 2.

然后，End 1释放同源DNA，其末端的核苷酸与End 2末端的核苷酸相结合。

Our 46 chromosomes come in 23 pairs of two homologous chromosomes, which code for the same traits and therefore have similar nucleotide sequences.

我们的46条染色体由23对同源染色体组成；同源染色体编码相同性状，因此具有相的核苷酸序列。

Now, whether this is a homologous, meaning it was only one evolution, or it evolved several times, we don't really know.

现在，这是否是同源的， 意味着它只是一次进化，或者它进化了几次， 我们真的不知道。