Test
17.- Variation in a species
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Preguntas del test (7)
1Any change in our DNA code can produce an effect, most of the time in form of…
- AMutation that produces cancer
- BMutation that produces positive changes
- CMutation that changes the proteins
2What is the human being chromosomal number?
- A46 pairs of chromosomes
- B23 pairs of chromosomes
- C23 chromosomes
3Why do we have two different alleles for each trait?
- ABecause we need them for variation
- BBecause we inherited from our parents
- CBecause we have pairs of chromosomes
4Why homologous chromosomes are not identical?
- AThey present the same set of genes but different alleles
- BThey present different set of genes but the same alleles
- CThe present different set of genes and different alleles
5What is the difference between genotype and phenotype?
- AWhat we don´t see and what we see
- BAlways the same and always different
- CThe second is the physical representation of the first
6Mutation is a rare event, so that variation in species is due to what processes?
- ARecombination
- BSexual reproduction
- CGenetic drift
7Why having two genders have been such a great idea?
- ABecause it is very funny
- BBecause it introduces variation into population
- CBecause we need more biodiversity
Información
- Descripción
- https://www.khanacademy.org/science/biology/her/evolution-and-natural-selection/v/variation-in-a-species
- Idioma
- English
- Visitas
- 179
- Historial
- Creado el 25 jul 2015 · actualizado el 30 may 2017
- Etiquetas
- Valoración
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