In a cell with four chromosomes, there would be ___ pairs of chromosomes. What is the difference between X and Y chromosomes and how do they affect genetics? What is the process in which identical copies of the two DNA molecules which make up the chromosome are produced? What ...
In meiosis, what makes up a tetrad? Meiosis Meiosis is a process for cell division that is used to help reduce chromosome number. When multicellular organisms, like humans, reproduce, two individuals combine their gametes, or sex sells. The chromosome number is these sex cells is reduced by ...
The very long strand of DNA which further contains many genes (hundreds to thousands) makes up a chromosome. The genes are arranged in a particular sequence and have a particular location on the chromosome (called its locus). In addition to DNA, chromosomes also contain man...
人体的体细胞染色体数目为23对,其中22对为男女所共有,称为常染色体(autosome);另外一对为决定性别的染色体,男女不同,称为性染色体(sex chromosome),拥有XY则会发育为男性,拥有XX则会发育为女性,普遍是这么认为的。 可世界就是这么神奇,报道没有说那名...
DNA molecules are long — so long, in fact, that they can't fit into cells without the right packaging. To fit inside cells, DNA is coiled tightly to form structures calledchromosomes. Each chromosome contains a single DNA molecule, wrapped tightly around spool-like proteins called histones, ...
DNA molecules are long — so long, in fact, that they can't fit into cells without the right packaging. To fit inside cells, DNA is coiled tightly to form structures calledchromosomes. Each chromosome contains a single DNA molecule, wrapped tightly around spool-like proteins called histones, ...
This mode of action makes cloning more difficult because larger and repetitive DNA fragments have to be assembled. The target sequence area is thus larger, which increases the specificity and reduces the probability of an off-target mutation. The basis for this is that a DNA region of ...
On my honor, I would not make this up. I will end this post with an observation about fishing and preventing suicide. My father was a fisherman who was always getting ready to plan, to layout a scheme, to pencil in a strategy, to address the goal of heading on down to the trout st...
【题目】When people ask me what Down Syndrome(唐氏综合症) is, I tell them it’s an extra chromosome(染色体). A doctor would tell you the extra chromosome causes an intellectual disability that makes it harder for me to learn things. Even though I have Down Syndrome, my life is a lot ...
Genetic Material of a Cell: A cell has several components, but the most important component is the nucleus. The nucleus comprises of genetic information. DNA is a super-coiled strand-like structure which is made up of chromosome. These chromosomes are majorly responsible for the variation see...