For the first two weeks of a human pregnancy, the developing organism is referred to as a(n)

Question

BlackTom AI · Accepted Answer

The question asks: for the first two weeks of a human pregnancy, the developing organism is referred to as a(n) zygote.
Since fertilization marks the creation of a single cell called the zygote, and the initial rapid cell divisions (cleavage) happen during the first days after fertilization, many textbooks describe the early embryo up through the first week as the zygote. 
As development proceeds, the zygote becomes a morula and then a blastocyst as it travels toward and implants into the uterine wall; however, these transitions occur within or after the first two weeks depending on terminology. 
Because the prompt specifies the first two weeks, identifying the term as zygote aligns with the classic stage immediately following fertilization before significant differentiation and the later morula/blastocyst stages occur. 
If there were other options, we would evaluate them by noting that later terms (morula, blastocyst, embryo) refer to later phases of pre-implantation development or post-implantation development, not the initial two-week window. 
In this particular item, the supplied answer identifies the zygote as the correct term for that early period, and the reasoning above supports that classification. 
Be mindful that some sources differentiate stages slightly by timeline (e.g., zygote vs. morula versus blastocyst), but for the requested two-week window, zygote is the conventionally correct label in many educational contexts.

PSYB64H3 S All Sections Test Your Mettle: Are You Ready for Midterm 2?

For the first two weeks of a human pregnancy, the developing organism is referred to as a(n)

查看解析

登录即可查看完整答案

类似问题

The longest period of prenatal development is the _____ period.

The first days and weeks after conception (the germinal and embryonic periods) are _____ for body formation.

Number the following developmental stages of pregnancy in order from conception to birth: 1: 1. 2: 2. 3: 3. 4: 4. 5: 5.

Kalinda recently visited her obstetrician who informed her that she was pregnant and conceived approximately 10 weeks ago. What prenatal developmental period is Kalinda currently in?

The implantation of the blastocyst in the uterine wall marks the transition between which two consecutive periods of prenatal development?

Place the following prenatal events in order, from earliest to latest. 1: 1. 2: 2. 3: 3.

The fetal period of prenatal development is characterized by

The three important prenatal phases are

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单