A) heredity B) immunity C) evolution D) differentiation
A) availability of starch molecules B) nutritional habits of the organism C) type and order of amino acids D) environment of the organism
A) selective breeding B) cloning C) differentiation D) gene insertion
A) coiled strands of genetic material B) large molecules that have only one function C) reproductive cells composed of molecular bases D) folded chains of bonded glucose molecules
A) genetic engineering B) natural selection C) habitat modification D) asexual reproduction
A) The gene for insulin is turned ON in liver cells, but the gene for testosterone is not B) The gene for insulin is a sequence of five different molecular bases while the gene for testosterone is a sequence of only four differentmolecular bases. C) The gene for insulin is replicated in vacuoles, while the gene for testosterone is replicated in mitochondria D) The gene for insulin has a different sequence of molecular bases than the gene for testosterone.
A) different groups of cells containing the DNA may be exposed to different environmental conditions, for example, more food for one but not the other B) only the DNA in certain cells will replicate C) DNA is functional in only 10% of the cells of the body D) some of the DNA in some of the cells will be removed by chemical reactions
A) mitosis → fertilization → meiosis B) fertilization → meiosis → mitosis C) meiosis → fertilization → mitosis D) fertilization → mitosis → meiosis
A) zygote formation B) meiotic cell division C) mitotic cell division D) recombination
A) replication and cloning B) the need to adapt and maintain homeostasis C) overproduction of offspring and competition D) sorting and recombining of genes in meiosis
A) mated only with panthers from Texas B) increased the genetic variability of the panther population in Florida C) solved the reproductive problems of the species by asexual methods D) produced more reproductive cells than the male panthers in Texas
A) an adaptation that will be passed on to other types of cells in the body B) a mutation that will affect the synthesis of a certain protein in the cell but not the offspring C) rapid evolution of the organism in which the cell is found D) increased variation in the type of organelles present in the cell
A) fusion of eggs and sperm to produce zygotes B) internal fertilization to produce an embryo C) mitosis to produce a larger population D) meiosis to produce gametes
A) oranges and other kinds of fruit B) oranges without seeds, only C) oranges with seeds, only D) a majority of oranges with seeds and only a few oranges without seeds
A) It is not affected by conditions outside the embryo. B) It will not be affected by any medication taken by the mother C) It is affected primarily by the eating habits and general health of the mother. D) It is affected primarily by the eating habits and general health of the father.
A) The cells produced by a zygote usually have different genes. B) As an embryo develops, various tissues and organs are produced. C) Offspring have a combination of genes from both parents. D) Replicated chromosomes separate during gamete formation.
A) a cancer that mutates and becomes elegant and beautiful B) the strange effects mannequins can have on people C) a dog named Samantha and how she helps her owner overcome obstacles D) a virus aimed to cure cancer that mutates and causes humans to become monster-like
A) cannot be passed on to offspring B) usually lead to the death of the organism C) lead to more serious mutations in offspring D) are usually beneficial to the organism
A) Each cell has pairs of chromosomes and the cells are usually genetically identical. B) Each cell has half the normal number of chromosomes and the cells are usually genetically different. C) Each cell has pairs of chromosomes and the cells are usually genetically different. D) Each cell has half the normal number of chromosomes and the cells are usually genetically identical.
A) express adaptations unlike (different than) those of the other cells B) have a resistance to different antibiotics C) synthesize the same proteins and enzymes as the entire colony is cloned from the original D) replicate different numbers of genes
A) make fertilization impossible B) make carrying a fetus impossible C) affect the production of eggs D) decrease her ability to provide essential nutrients to an embryo
A) estrogen B) ovary C) placenta D) progesterone
A) are made up of nutrient-rich sugars B) carry progesterone and fool the mother's body into thinking it is already pregnant C) provide plenty of testosterone for her well-being D) are easily digestable
A) engulfing (devouring) and digesting the bacteria whole B) causing mutations in the bacteria C) inserting part of their DNA into the bacterial cells D) producing toxins that compete with bacterial toxins
A) it takes a very long time to begin injecting its viral RNA code into the hosts' cells B) provides immediate immunity to other diseases C) hijacks cells into making more viruses leaving the host defenseless to disease D) automatically causes AIDS |