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a cell's chromosomes must be duplicated before mitosis occurs so that
each daughter cell gets a full number of chromosomes
which sequence is correct for mitosis
chromoesomes form, chromosomes line up, chromosomes separate, nuclei form
if one copy of a dominant allele is present in a genotype, then the trait the allele codes for is
expressed in the phenotype
if one parent has two dominant alleles and another parent has two recessive alleles, the offspring will have
the dominant phenotype
after mitosis, the number of chromosomes in a daughter cell is
the same as the number in the parent cell
one organism produces one or more offspring that are exact duplicates of itself
form of asexual reproduction performed by prokaryotes (cells that do not have a well defined nucleus)
some single celled organisms like paramecia may reproduce by dividing into two new cells. Which is a characteristic of this kind of reproduction
the new cells are identical to the parent cell
mitosis cycle ( there are 5 phases to cell replication)
interphase, prophase, metaphase, anaphase, telophase, cytokinesis
characterized by the absence of a distinct, membrane-- bound nucleus, and by DNA that is not organized into chromosomes
some diseases in humans are caused by genetic mutations. The mutated genes can then be passed from parent to child. Where does the replication of the mutated genes occur in the human cell?
the process in which the nucleus divides to form two new nuclei and is a sexual reproduction
muscles need an electrical signal, usually from the brain, to contract. Without a source of energy, the contraction cannot take place. At which structural leel do muscles convert substances from food into energy for movement?
a form of intermediate inheritance in which one allele for a special trait is not completely domiant over the other allele. This result in combined phenotype
a reproductive cell having one half the number of chromosomes, capable of fusing with a gamete of the opposite sex to prodice the fertilized egg
states that the members of each pair of alleles separate when gametes are formed. A gamete will recei e one allele or the other
Law of Segregation
states that two or more paires of alleles segregate independently of one another during gamete formation
Law of Independent Assortment
a threadlike linear strand of DNA and associated proteins in the nucleus of eukaryotic cells that carries the genes and functions in the the transmission of hereditary information
how many chromosomes does human have
humans have a total of 46 chromosomes in each cell, including two sex chromosomes
the study of heredity, a study of how certain characteristics are passed on from parent to children
particles and waves acan be defined by their unique characteristics, yet they do have similarities. Which of the following is a unique characteristic of a particle
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