Genetics Year 9

What is a segment of DNA that determines a specific trait called?

• Chromosome
• Gene
• Trait
• Allele

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NGSS.MS-LS3-1

What is DNA?

• Dideoxyribomuteic acid

• A chemical stored in the mitochondria

• Deoxyribonucleic acid

• What proteins are made from

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NGSS.HS-LS1-1

Stores all of the cell's genetic information and controls the cell's activities. 

• Chloroplast
• Mitochondria
• Nucleus
• Golgi Apparatus

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NGSS.MS-LS1-2

What is an advantage of asexual reproduction?

• Produces no variety in offspring, so if the parent has bad characteristics, so will the offspring.

• Does not waste resources because no gametes are produced.

• Produces offspring that will be more likely to survive if the environment changes.

• Takes less time because mates are easier to find.

Tags

NGSS.MS-LS3-2

Is a physical characteristic passed down from parents to offspring.

• trait
• egg
• sperm
• reproduction

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

NGSS.MS-LS3-1

If a farmer wanted to get lambs with lots of thick black wool, what would he need to do first?

• Select offspring with the desired characteristics and breed them.

• Transfer pollen from the anther of one flower to the stigma of the other using a pollen brush.

• Find a sheep with black wool and a sheep with thick wool.

• Buy a pregnant sheep and wait to see what colour the lamb is.

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NGSS.MS-LS4-4

NGSS.MS-LS1-5

Is the study of Genes. 

• Heredity
• Genetics
• Chemistry
• Physics

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NGSS.MS-LS4-4

NGSS.MS-LS3-1

If a pet shop owner wanted to make a new breed of rabbit that would be good for young children to keep as pets, which would be the best rabbits to breed together?

• A large, heavy rabbit and a rabbit with short hair.

• A rabbit prone to fleas and a rabbit with very long white fur.

• A small rabbit and a rabbit with small teeth.

• A rabbit that only eats once a day and a rabbit with very sharp claws.

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NGSS.MS-LS3-2

NGSS.MS-LS4-4

How many chromosome pairs do humans have?

• 23
• 46
• 10
• 40

Tags

NGSS.HS-LS3-1

Choose the best description of how identical twins form.

• One egg is fertilised by two sperm. The fertilised zygote splits in two before developing into an embryo.

• One sperm fertilises one egg. The zygote divides to form an embryo. The embryo splits in two and each develops into a baby.

• Two sperm and fertilised by two eggs. Each zygote develops into a genetically identical embryo.

• One sperm fertilises one egg. The fertilised zygote splits in two before developing into an embryo.