A. alleles
B. mitosis
C. DNA
D. phenotype
E.chromosome
F. codominance
G. diploid
H. meiosis
I. incomplete dominance
J. centromere
K. reproduce
L. RNA
8. Chromosome pairs contain different versions of genes, which are called __________________. (1 point)
alleles
9. The process in which body cells are duplicated in order to grow and repair body tissues is called __________________. (1 point)
10. The process in which the chromosomes in sex cells are reduced by half is called ________________. (1 point)
11. A white mouse is crossed with a black mouse. All the offspring were grey. The genes for fur color in mice show _________________. (1 point)
12. Genes are specific sections of ______________________. (1 point)
13. To pass its traits on to the next generation, an organism must ______________. (1 point)
Well :3 8. Alleles 9. Mitosis 10. Meiosis 11. Codominance 12.DNA 13. Reproduce
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8. Chromosome pairs contain different versions of genes, which are called alleles.
To find the answer to this question, we need to understand what chromosomes are and how they relate to genes. A chromosome is a structure in the cell that carries genetic information in the form of genes. Genes are specific sections of DNA that code for specific traits.
Within a pair of chromosomes, there are different versions of genes, which are called alleles. Each allele represents a different variation of a gene. For example, in humans, there is a gene for eye color, and different alleles of this gene can result in different eye colors like blue, green, or brown.
Therefore, the correct answer is A. alleles.
9. The process in which body cells are duplicated in order to grow and repair body tissues is called mitosis.
To find the answer to this question, we need to understand the process of cell duplication in the human body. Cell duplication is necessary for growth and tissue repair, and it occurs through a process called mitosis.
Mitosis is a type of cell division where a single cell duplicates its DNA and divides into two identical daughter cells. This process allows for the growth and replacement of cells in the body. It is essential for tissue repair after injuries and for the normal development of an organism.
Therefore, the correct answer is B. mitosis.
10. The process in which the chromosomes in sex cells are reduced by half is called meiosis.
To find the answer to this question, we need to understand the process of cell division in sex cells. Sex cells, such as sperm and eggs, are produced through a special type of cell division called meiosis.
Meiosis is a two-step process that reduces the number of chromosomes in half. During meiosis, a cell undergoes two rounds of division, resulting in four daughter cells, each with half the number of chromosomes as the parent cell. This reduction in chromosome number is essential for sexual reproduction, as it ensures that when sperm and egg cells combine during fertilization, the resulting offspring have a complete set of chromosomes.
Therefore, the correct answer is H. meiosis.
11. A white mouse is crossed with a black mouse. All the offspring were grey. The genes for fur color in mice show incomplete dominance.
To find the answer to this question, we need to understand the concept of inheritance and dominance in genes. Incomplete dominance is a mode of inheritance where the phenotype of the heterozygous individual (having two different alleles) is an intermediate blend of the two homozygous phenotypes (having two identical alleles).
In the example given, if a white mouse (homozygous for the white fur color allele) is crossed with a black mouse (homozygous for the black fur color allele), and all the offspring are grey, it indicates that neither the white nor the black allele is completely dominant over the other.
Incomplete dominance occurs when neither allele is completely dominant, resulting in a blend of both phenotypes. Therefore, the correct answer is I. incomplete dominance.
12. Genes are specific sections of DNA.
To find the answer to this question, we need to understand what genes are and their relationship with DNA. Genes are specific sections or segments of DNA (deoxyribonucleic acid) molecules.
DNA is a long, double-stranded molecule that contains the genetic information in the form of genes. These genes are segments of DNA that encode instructions for building and maintaining an organism. They determine traits such as hair color, eye color, and height.
Therefore, the correct answer is C. DNA.
13. To pass its traits on to the next generation, an organism must reproduce.
To find the answer to this question, we need to understand the process that enables organisms to pass on their traits to the next generation. Reproduction is the process through which organisms produce offspring that inherit their genetic traits.
Reproduction can occur through various methods, including sexual reproduction, where genetic material from two parents is combined to create offspring with a unique combination of traits, or asexual reproduction, where a single parent produces genetically identical offspring.
Regardless of the specific method, the act of reproduction ensures that an organism's genetic information is passed on to the next generation, thus allowing for the continuation of traits and the preservation of species.
Therefore, the correct answer is K. reproduce.
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