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Multicellular
Nat5 Multicellular Reproduction
| Question | Answer |
|---|---|
| What is variation? | Differences between members of the same species. |
| Blue monsters were crossed with yellow, all the offspring are blue. Which characteristic is recessive? | Yellow |
| Blue fur is a dominant characteristic (allele B). What could the genotype of blue bat be? | BB or Bb |
| What are the different variants of the same gene called? | Alleles |
| If two heterozygous yellow Tombliboos are crossed, what proportion of the litter will be of the recessive green colour? | one quarter |
| What is polygenic inheritance? | Inheritance of characteristics conterolled by more than one gene. |
| What is the phenotype ratio resulting from a cross of two heterozygous individuals? | 3:1 (3 x dominant : 1 x recessive) |
| What is the genotype ratio resulting from a cross of two heterozygous individuals? | 1:2:1 (BB:2xBb:bb) |
| What is a phenotype? | How individual looks as a result of their genes. |
| What does genotype tells us? | Which alleles the individual carries. BB or Bb or bb etc. |
| Why is the expected ratio not always seen in nature? | each fertilization is an idependent event so smaller the sample size greater the chance of difference from the expected ratio, also different alleles survive better. |
| Male gametes in humans are produced in | Testes |
| Human male gametes are called | Sperm cells |
| Why are the human egg cell the biggest cells in the female body? | Egg cells contain the food store for the developing baby |
| Female gametes in plants are called | Ovules |
| Female gametes in plants are contained in | Ovaries |
| Male gametes in plants are contained in | Anthers |
| Male gametes in plants are called | Pollen |
| Female gametes in humans are contained in | Ovaries |
| Genetic information is stored in an organelle called a | Nucleus |
| Molecule that stores genetic information is | DNA |
| DNA in a nucleus is organized into | Chromosomes |
| Full set of chromosomes is called a | Chromosome complement |
| A full human chromosome complement consists of | 46 chromosomes |
| Cells with full chromosome complement are called | Diploid |
| Cells with half of chromosome complement are called | Haploid |
| Human haploid chromosome complement consists of | 23 chromosomes |
| Egg cell and sperm cell are called | Gametes |
| In fertilization gametes combine to form a | Zygote |
Created by:
kyle_academy
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