Suppose you cross a pea plant with yellow, smooth seeds with one that has green, wrinkled seeds
You examine the seeds of 967 offspring and find that some have yellow, smooth seeds and some have yellow, wrinkled seeds, but no green seeds of either type show up. What is the genotype of the yellow-seeded parent? (Y = yellow, y = green; S = smooth, s = wrinkled)
A) YYSS B) YySS C) YySs D) YYSs E) YYss
D
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Answer the following statements true (T) or false (F)
1. If a woman in her late forties wants to have a baby and seeks medical advice, she would most likely be advised of the risks related to nondisjunction occurring and a higher rate of fetal chromosomal abnormality. 2. Identical twins result from one zygote splitting into two genetically identical embryos. 3. Without genetic diversity, a population might more easily fall victim to parasites and pathogens. 4. Caenorhabditis elegans is a hermaphrodite, which means it only undergoes sexual reproduction. 5. In animals, each gamete arises from a diploid cell containing two sets of homologous chromosomes.
The first cell of a new individual that is the
result of sexual reproduction is a
a. zygote. b. embryo. c. gamete. d. germ cell. e. sporophyte
Asian pearl divers hyperventilate in order to reduce the ____ concentration in the blood
a. oxygen b. hydrogen ion c. carbon dioxide d. chloride ion e. hemoglobin
Which of the following is a common feature of the processes indicated by both letters D and E?
a. movement of organic food molecules between catabolic pathways
b. movement of phosphate groups associated with ADP
c. movement of hydrogen atoms associated with NADH
d. movement of pyruvic acid into the mitochondria