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Science study
| Question | Answer |
|---|---|
| What is Parthenogenesis Please give an example | Parthenogenesis is asexual reproduction where an egg develops without fertilization Ex komodo dragon |
| Give an example of mating behavior that increases reproductive success | Courtship displays, like elaborate dances or colourful plumage, attract mates |
| What is sexual selection what are the two types give an example for each. | Intersexual selection female chooses (peacocks feathers) Intrasexual selection male competition (deer fights) |
| Advantages and disadvantages of asexual and sexual reproduction. | Asexual advantage quick, disadvantage low diversity. Sexual advantage diversity disadvantages slower. |
| What are the two types of asexual reproduction | Budding, Binary fission |
| Give a example of a physical trait that is likely to increase reproductive success. | Bright feathers in male birds |
| How can plants reproduce both sexually and asexually give examples | Plants reproduce sexually through seeds(flowering plants) and asexually through runners(strawberries) Plants use Anther (male) Stigma (female) Plants use pollinators like bees |
| What is a train and how does an organism inherit it? | A trait is a characteristic, such as eye colour, inherited through genes. |
| Are inherited diseases contagious | No they are not. |
| Does sexual reproductions yield offspring that are identical to their parent. | No they are diverse |
| Give 3 examples of organism that reproduce sexually | Humans, Dogs and Tigers |
| What are haploid cells | cells with a set of chromosomes |
| What are diploid cells | cells with two sets of chromosomes |
| What is an egg | Female sex cell |
| What is a sperm | Male sex cell |
| How many chromosomes are in the human sex cell why is this different from the rest of the cells | Sex cells have 23 (haploid) while others have 46 (diploid) |
| Give 3 examples of organism that can reproduce both sexually and asexually | Sea stars, Certain fungi, Some plants like dandelions |
| How are cells, nucleus, DNA, chromosomes, and genes related | Cells contain a nucleus, which houses DNA organized into chromosomes that carry genes. |
| What are phenotypes | Observable traits of an organism |
| What are alleles | different versions of a gene that determines specific traits |
| What are traits | Characteristics inherited from parents, such as hair colour or disease resistance |
| What did Mendel study | Mendel studied inheritance patterned in pea plants |
| What happened if u cross Homozygous Dominant with a recessive | All offspring will be heterozygous and show the dominant trait |
| What does Homozygous and heterozygous mean | Homozygous means AA and heterozygous mean Aa |
| What do punnett squares tell about the offspring | Possible genetic combinations |
| How many chromosomes do humans have | 46 |
| What is a stem cell | A stem cell is a undifferentiated cell capable of developing ito cell types |
| What is a zygote | A zygote is the fertilized egg formed when a sperm merges with an egg |
| What is a blastula | Early stage of embryonic development or a hollow ball of cells |
| what is the differences between inherited and acquired traits please give an example of each | inherited ex eye color is genetic, passes from parents. acquired traits develop from environmental influences |