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MArishka [77]
3 years ago
9

If a person has a family history of substance abuse, does this mean that the person will also become a substance abuser? Why?

Biology
1 answer:
storchak [24]3 years ago
6 0

Answer:i need help with this same question

Explanation:

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What produces egg and sperms cells during the life cycle of a plant
tatyana61 [14]
Gametophyte

The cells from the male and female that combine to form a zygote are called gametes. The main job of the gametophyte is gamete production. Gametes are haploid reproductive cells. Gametes are produced in the sex organs on the haploid gametophyte by mitosis or cellular division without reduction of chromosomes sets. There are two sex organs; archegonium<span> which is found in the female sex organ producing egg cell and </span>antheridium<span> which is found in the male sex organ producing sperm cells.</span>
7 0
3 years ago
Independent assortment occurs only in cells that are heterozygous for two genes (AaBb) and not in cells that are completely homo
fomenos

Answer:

False

Explanation:

Gregor Mendel, who was referred to as the FATHER OF GENETICS, discovered the principles that governs heredity. One of those principles which he called LAW OF INDEPENDENT ASSORTMENT states that the alleles of a gene randomly segregates into gametes independently of the alleles of another gene. This means that during gamete formation (meiosis), the separation of the alleles of one gene doesn't affect the separation of the alleles of another gene.

Mendel discovered this principle when he worked with two genes that was responsible for two distinct characters. Hence, in a cell that contains two genes responsible for two different characters in the organism, independent assortment will always occur during gamete formation. Although, in an organism that is homozygous for both traits (AABB or aabb), only one type of allelic combination will be produced in the gamete. However, the alleles will still randomly align and separate independently of one another during Metaphase and Anaphase stages of meiosis.

4 0
3 years ago
Read 2 more answers
18.
bagirrra123 [75]

The correct answer is rapids and waterfalls.  

Rapids refers to the segments of streams with extensively vigorous currents, various obstacles, and steps in their streambeds. A waterfall refers to a vertical drop in a stream bed. Both are the locations of vigorous erosion.  

The rapids are generally produced where the resilient bedrock limits a stream to a narrow channel and forces an enhancement in the velocity of water.  

On the other hand, waterfalls are produced where the fast-flowing water negotiates a geologic contact amid the more resilient and less resistant layers of rock, or through a fault, which has analogized distinct kinds of rocks. Or it can be said that waterfalls usually produce at the end of a series of rapids.  


3 0
3 years ago
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How do clastic sedimentary rocks form
Ainat [17]
Weathering : it causes the loosening of the rocks
Transportation:sediment is carried along the currents to the depression
Deposition : sediments are deposited and trapped in the basin
3 0
3 years ago
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Helppppp plssss I will mark as brainliest
lawyer [7]

Answer:

I'm pretty sure it is organ

7 0
3 years ago
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