Problem 2
Question
Which of the following processes does not increase genetic diversity? a. parthenogenesis. b. random DNA mutations. c. genetic recombination. d. independent assortment. e. random combinations of paternal and maternal chromosomes.
Step-by-Step Solution
Verified Answer
The process which does not increase genetic diversity is Parthenogenesis
1Step 1: Understanding Genetic Diversity
Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species. It's quintessential in adaptation and survival of a species. Some processes increase genetic diversity by introducing new genetic variation into a population's gene pool.
2Step 2: Evaluate Option A
Parthenogenesis is a form of asexual reproduction in which growth and development of embryos occur without fertilization. In parthenogenesis, genetic variation is not introduced because offspring are typically exact genetic replicas of the parent. So, it does not increase genetic diversity.
3Step 3: Evaluate Other Options
Random DNA mutations, genetic recombination, independent assortment, and random combinations of paternal and maternal chromosomes, all introduce new genetic variations into a population. Therefore, they all increase genetic diversity.
Other exercises in this chapter
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Asexual reproduction is most successful in: a. changing environments. b. sessile animals. c. densely settled populations. d. land animals. e. genetically varied
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Gametogenesis has parallel stages in egg and sperm formation. The stage in eggs that is equivalent to spermatids is the: a. primary oocyte. b. oogonium. c. ovum
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The animal group that exhibits external fertilization is the: a. amphibians. b. birds. c. sharks. d. reptiles. e. mammals.
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