Aussie Maths & Science Teachers: Save your time with SmarterEd
Sheep have 54 chromosomes, while goats have 60 chromosomes. The hybrid offspring of a sheep-goat pairing is called a geep.
During fertilisation, an egg from the sheep is fertilised by a sperm from the goat, resulting in a geep.
Which of the following will be correct for the geep?
\(C\)
→ \(54 + 60 = 114\)
→ \(114\ ÷\ 2 = 57\)
\(\Rightarrow C\)
A zebronkey hybrid is the result of crossing a male zebra which has 44 chromosomes with a female donkey which has 62 chromosomes.
How many chromosomes will the zebronkey have?
`A`
→ A haploid set of 22 chromosomes came from the zebra and 31 came from the donkey.
`=>A`
What are alternative forms of genes called?
`A`
By Elimination:
→ `B`, `C` and `D` are all associated with chromosome structure.
`=>A`
In mice, muscle cells contain 40 chromosomes.
Which of the following is a correct statement about mouse cells?
`B`
→ Muscle cells are somatic, diploid cells.
→ Therefore, they would contain 20 pairs of chromosomes.
`=>B`