Sometimes plants produce embryos in seeds without meiosis and fusion of gametes. This process is
known as:
a. coevolution.
b. apomixis.
c. self-pollination.
d. mitosis.
e. suckering
B
You might also like to view...
Osmosis is the diffusion of water across a membrane in response to the concentration of one or more of the ______
A. solutes B. membranes C. compartments D. cells
What features of meiosis allow for independent assortment of chromosomes?
A. random alignment of homologous sister chromatids on the metaphase plate B. separation of sister chromatids C. reduction of chromosome number from diploid to haploid D. both the separation of sister chromatids and the reduction of chromosome number from diploid to haploid E. All of these features allow for the independent assortment of chromosomes.
Tay-Sachs, which is a recessive lethal disease, results only when individuals possess two copies of the disease-causing allele. Which of the following statements is true about this disease?
a) Heterozygous individuals are more fit than homozygous dominant individuals, so eventually, there will only be heterozygotes in the population. b) Heterozygous individuals may pass on their copy of the disease-causing allele to offspring. c) All cases of this disease must be caused by new mutations. d) Heterozygous individuals only pass on the dominant copy of the allele to offspring. e) A homozygous individual can pass on both of the recessive genes for Tay-Sachs.
What is the gelatinous matrix inside chloroplasts that contains ribosomes, DNA, and enzymes?
A. granum B. chlorophyll C. thylakoid D. stroma E. mitochondria