Question

human sexual reproduction
sexual reproduction requires two parents. each parent contributes a sex cell that has half of the normal dna
of a regular body cell. in males, the reproductive cell is called sperm and in females, the reproductive cell is
called eggs. when these reproductive cells combine during fertilization, the result is a zygote, which then
continues to develop into an embryo and eventually a baby. offspring share traits of both the mother and the
father because their cells contain half the mothers dna and half the fathers dna.
sexual reproduction increases genetic variation in offspring (in other words, children look different than their
parents). you can see the effects of this genetic variability if you look at the children in a large family and note
how each person is unique (this is why offspring of children with the same parents all look different from each
other). in species that do not reproduce through sexual reproduction, the offspring look identical to the parent

all humans started as a zygote. a zygote is a single cell with all the dna (and instructions) to turn into a
human baby. zygotes contains 23 pairs of chromosomes. each chromosome pair is composed of a
chromosome from mom and a chromosome from dad.

key concept 6:
the process of _______________ reproduction leads to offspring that have
_______________ the dna of each of their parents. as a result, the offspring have
____________________ from both parents.

key concept 7:
species that do not reproduce through sexual reproduction produce
__________________ that are __________________ to their parents.

Explanation:

Key Concept 6:

From the text, sexual reproduction involves two parents (mother and father) contributing sex cells (egg and sperm) that combine during fertilization. The zygote (and resulting offspring) has half the DNA from each parent, so the offspring share traits (or have half) of each parent's DNA. So the first blank is "sexual", the second blank can be "half" (or "part of"), and the third blank is "traits" (or "DNA - related characteristics").

The text states that in species not using sexual reproduction, the offspring look identical to the parent. The offspring produced by non - sexual reproduction (like asexual reproduction) are called "offspring" (or "progeny") and are "identical" to the parent.

Answer:

The process of \(\boldsymbol{\text{sexual}}\) reproduction leads to offspring that have \(\boldsymbol{\text{half}}\) the DNA of each of their parents. As a result, the offspring have \(\boldsymbol{\text{traits}}\) from both parents. (Other appropriate terms like "part of" for the second blank and "characteristics" for the third blank are also acceptable based on the context.)

Key Concept 7: