Biology: Variation and evolution

1. 1The genotype can be changed by the environment

   1. AVerdadero
   2. BFalso
2. 2[blank_start]Mutations[blank_end] that happen when the gametes are formed may affect the [blank_start]phenotype[blank_end] of the offspring

   1. AMutations
   2. Bphenotype
3. 3It’s rare for mutations to help an organism adapt

   1. AVerdadero
   2. BFalso
4. 4Individuals with characteristics most suited to the [blank_start]environment[blank_end] are more likely to survive to [blank_start]breed[blank_end] successfully

   1. Aenvironment
   2. Bbreed
5. 5[blank_start]1915[blank_end]- the oyster fisherman in Malpeque Bay, Canada noticed a few diseased oysters among the healthy catch, by [blank_start]1922[blank_end], the oysters were wiped out by a new [blank_start]disease[blank_end] however some oysters had a [blank_start]mutation[blank_end] that made them resistant. By [blank_start]1940[blank_end], producing more oysters than ever before.

   1. A1915
   2. B1920
   3. C1923
   4. Ddisease
   5. E1922
   6. Fmutation
   7. G1940
6. 6What can selective breeding enable for the offspring?

   1. ADisease resistant
   2. BTo produce more meat or milk
   3. CDomestication
   4. DBecoming more unusual, brightly coloured flowers
   5. EMore fertile
7. 7What are some problems of selective breeding?

   1. AReduces the number of alleles in the population
   2. BReduces variation
   3. CIf an environment becomes unstable then a species could die out
   4. DLots of inbreeding
8. 8Changing the genetic material- [blank_start]enzymes[blank_end] are used to isolate and [blank_start]cut[blank_end] out the required gene. Then, gene is inserted into a [blank_start]vector[blank_end] ([blank_start]bacteria[blank_end] plasma or virus) using more enzymes. After that, the vector is used to insert the [blank_start]gene[blank_end] into the required cell. As the [blank_start]organism[blank_end] develops it gains the new desired characteristics.

   1. Aenzymes
   2. Bcut
   3. Cvector
   4. Dbacteria
   5. Ecell
   6. Fgene
   7. Gorganism
9. 9Examples of genetic engineering include, [blank_start]jellyfish[blank_end] genes used for glow in the dark plants (glow when want water). Mice modelled for human diseases like cancer and [blank_start]diabetes[blank_end]. Also GM crops, which increases the [blank_start]yield[blank_end]. Potatoes to make more [blank_start]starch[blank_end] and more [blank_start]resistant[blank_end] against pests. Rice plants withstanding being completely covered in water for up to [blank_start]3[blank_end] weeks and still producing good crops. (( GM crops- [blank_start]infertile[blank_end]))

   1. Ajellyfish
   2. Bseahorse
   3. Cdiabetes
   4. Dchlamydia
   5. Eyield
   6. Fstarch
   7. G3
   8. H10
   9. Iinfertile
   10. Jfertile
   11. Kresistant

Descripción

Test sobre Biology: Variation and evolution , creado por Robyn Stevenson el 29/04/2018.

Autor

Robyn Stevenson

Idioma

English

Visitas

1

Etiquetas

gcse

Valoración

Aún sin valoraciones

Valora este test

Valora este test

Más sobre Population Genetics and Evolution