Ferns are both seedless and vascular
Answer:
1/2
Explanation:
let the alleles of the heterozygous woman without hemophilia be = Xhx
And the alleles of the man with hemophilia be XhY
If both XhY × Xhx; we have:
Xh Y
Xh XhXh XhY
x Xhx xY
XhXh and XhY are affected by the diseases
Xhx is a carrier
xY is normal
∴ the probability(chance) that their first child will have the disease is 2/4 of the total offspring
=1/2
∴ the probability (chance) that their first child will have the disease is 1/2
Three. The right lobe, the left anterior lobe, and the left posterior lobe.
Answer: According to the first law of thermodynamics, energy can be transferred from place to place or changed between different forms, but it cannot be created or destroyed. For instance, light bulbs transform electrical energy into light energy, and gas stoves transform chemical energy from natural gas into heat energy.
Explanation:
Meiosis 1 starts with one cell, ends with two.
Meiosis 2 starts with two cells, ends with four.
Meiosis 1 lines up with homologous pairs (Metaphase 1).
Meiosis 2 lines up straight in a line with no pairs (Metaphase 2).
Meiosis 1 one goes from Diploid to Haploid.
Meiosis 2 goes from Diploid to Diploid.