Since the dawn of time, several billion human (or humanlike) beings have lived, each contributing a little genetic variability to the total human stock.

自从人类起源以来，有几十亿人（或类人动物）曾经生活过，每一个都把一点儿不同的基因遗传给整个人类。

The information gets passed on to our children genetically.

这些信息会遗传给我们的孩子。

You survive and reproduce, and pass that trait on to some of your offspring.

你存活下来，繁衍后代，并将这特质遗传给你的后代。

They showed how genetic qualities are passed to living things from their ancestors.

他们展示了基因品质是如何从祖先遗传给后代的。

For example, Della will pass the Sickle Cell gene to his child.

例如，德拉会将镰状细胞基因遗传给他的孩子。

But a lack of genetic diversity presents an ongoing risk to the population.

但是缺乏遗传多样性给群带来了持续的风险。

And you got all of it from your mother.

这些都是由你的母亲遗传给你的。

I think you get that from me.

这应该是妈妈遗传给你的。

In fact, even when both parents carry a recessive gene, there's still a 75% chance that they won't both pass on the gene, leading to perfectly healthy kids with respect to that particular disorder or disease.

事实上，即使父母双方都携带有隐性基因，他们也有75%的几率不会同时将该基因遗传给下一代，从而使孩子们在有几率患上某疾病或失调的同时保持完全。

Studying family members permitted the researchers to examine when genetic mutations happened in two different kinds of cells: those present in only one individual and those passed on to the person's children.

通过对家庭成员的研究，研究人员可以检测两不同类型的细胞何时发生基因突变：一是只存在于个人身上的细胞，另一是遗传给孩子的细胞。

Tomatoes with traits that help them survive are more likely to live a nice, long life and pass those traits on to their offspring, while tomatoes with unhelpful traits are more likely to die before they have a chance to reproduce.

具有有助于其生存的性状的西红柿更有可能活得更久，并将这些性状遗传给后代，而具有无益性状的西红柿更有可能在有机会繁殖之前死亡。

Basic genetics tells us that only DNA gets passed along to offspring; characteristics like memories, scars, or giant muscles, can't get passed on since acquiring them doesn't alter the genetic code.

经典遗传学告诉我们只有 DNA 可以遗传给下一代，而记忆、疤痕或者强的肌肉等特征则不能，因为这些不能改变遗传密码。

Maybe the red wolf dies, because that's what's been happening for red wolves, but all of those genes that it just passed on to its coyote hybrid offspring, now get to circulate and we've rediscovered those.

也许红狼会死掉，因为这就是发生在红狼身上的事情，但所有这些红狼遗传给与其杂交的郊狼的后代的基因，如今开始流传，我们重新发现了它们。

Parents worried that they may pass on their short stature to their children can rest easy, as a new study reveals nurture is more important than nature when it comes to a person's height.

担心自己的矮个子会遗传给孩子的父母可以放宽心了，因为新研究发现，对一个人的身高而言，营养比遗传更重要。

Most cases of leukemia are not believed to be hereditary, but certain genetic mutations and conditions can be passed along to offspring that increase the chances of developing leukemia.

大多数白血病病例被认为不是遗传性的，但某些基因突变和疾病可以遗传给后代，从而增加患白血病的机会。

If a person has one defective alpha gene, they're called a silent carrier, because they don't have symptoms, but can still pass the gene to their children.

如果仅有1个α基因异常，称为携带者：他们没有症状，但仍可以把缺陷基因遗传给下一代。

The researchers said Americans value the medical promise of technology that could change the genetic qualities human parents pass on to their children.

研究人员表示，美国人很看重这项科技带来的医疗前景，它可能会改变父母遗传给子女的遗传特质。

Adopting a child doesn't transfer your genetic code to them, says pathologist Dr. Vincent DiMaio, who also worked on the Tinning case.

“收养孩子并不会把你的遗传密码遗传给他们，”病理学家文森特·迪马乔博士说，当时他也参与了廷宁的案子。

In this case, the fear serves as an evolutionary advantage and would be likely to get passed on in subsequent generations.

在这情况下，恐惧是一进化优势，很可能会遗传给后代。

That's what I needed, to know that you're okay and that a little part of you looks just like me.

我需要的就是这些，知道你过得很好，还有我遗传给你的可爱的小鼻子。