Final answer:
When nondisjunction occurs in a tree frog's meiosis, it results c) in loss of genetic material in daughter cells, leading to gametes with an abnormal chromosome number (n+1 or n-1). This is known as aneuploidy, and it can significantly affect the resulting offspring.
Step-by-step explanation:
If nondisjunction occurs in a tree frog with 26 chromosomes (2n = 26), a possible result of meiosis is c. Loss of genetic material in daughter cells. This is because nondisjunction refers to the failure of homologous chromosomes, or sister chromatids, to separate properly during meiosis I or II. When nondisjunction happens during meiosis I, each resulting gamete either has an extra chromosome (n+1) or is missing one (n-1), leading to aneuploidy. If it occurs in meiosis II, similar outcomes result but may also include some gametes with the correct chromosome number. This can lead to a variety of conditions, such as Trisomy 21 in humans, also known as Down Syndrome.
In response to the quiz options provided:
- a. Nondisjunction occurs when a homologous pair fails to separate during meiosis I, resulting in the formation of gametes containing n+1 and n-1 chromosomes.
- Nondisjunction occurring during meiosis II affects only one pair of sister chromatids, often resulting in two n+1 or n-1 gametes and two normal ones.
- The other quiz options provided do not accurately describe nondisjunction.